HBO’s miniseries “Big Little Lies” has fans hooked on the murder mystery. But in the second-to-last episode, which aired last night, a greater puzzle arose over the blink-and-you’ll-miss-it appearance of Alexander Skarsgard‘s penis.

They all want to know: Was it real or fake? (Beware of spoilers below.)

Skarsgard plays Perry Wright, abusive husband to Nicole Kidman’s character Celeste. In the scene in which Perry’s penis is exposed, Celeste is getting ready for the opening night of “Avenue Q,” the community play that she helped her friend Madeline Mackenzie (Reese Witherspoon) get into production. Perry has come home early from a business trip to Phoenix to see the play with Celeste. They start to get a little frisky, however, when she tells him to cool it because they’ll be late, he whips out his penis. “God, that’s quite a trick,” Celeste says.

Perry, the abusive man-child that he is, gets angry. He violently grabs her hair, and she reacts by grabbing a nearby tennis racquet and slamming it into his nether region. The result, we find out in a proceeding scene, is a broken urethra in two places, and an even angrier Perry. “You’re lucky I didn’t kill you,” he tells Celeste when they return home from the hospital.

Also Read: Now That the 'Game of Thrones' Penis Has Been Freed, What Does It Mean?

Skarsgard’s seemingly exposed penis brought fans into a flutter on Twitter, who expressed both shock and confusion:

NICOLE KIDMAN HIT ALEXANDER SKARSGARD'S PROSTHETIC COCK WITH A TENNIS RACKET THIS IS THE BEST SCENE IVE EVER SEEN

— em (@cxmathison) March 27, 2017

Some were, sort of, speechless — and assumed that the penis was fake.

I'm still shook from Alexander Skarsgard's prosthetic happy monday

— Ian Zelaya (@IanDavidZelaya) March 27, 2017

I take it back… Just saw the full frontal #AlexanderSkarsgard I'm entirely sorry. ???? #BigLittleLies

— Leah Gadallah (@LeahPelka) March 27, 2017

Also Read: 'Tomb Raider' First Look: See Alicia Vikander's Lara Croft (Photos)

I was not expecting to see ALL of Alexander Skarsgard but woah #BigLittleLies

— Ty (@tymichaeljohns) March 27, 2017

Some were excited.

Alexander Skarsgard's dildo dick ???????????????????????????????????? @BigLittleLiesSP

— Alex Stypula (@AlexStypula) March 27, 2017

Ok Alexander Skarsgard ????????

— Chantal Strasburger (@Chantagold) March 27, 2017

And others — uncomfortable.

Omg they literally just showed nicole rubbing perry's penis like legit alexander skarsgard's penis and I am so uncomfortable

— veronica★ (@regaldarlings) March 27, 2017

But mostly, fans just needed to know:

Please tell me that was really Alexander Skarsgard's cock. #erikforever ???????????? #BigLittleLies

— TheWalkingDread (@tLo_MA) March 27, 2017

Also Read: 'Spider-Man: Homecoming': Michael Keaton Spills Details on Supervillain Vulture

Is that Alexander skarsgard’s real dick?

— Christian Chimchim (@swanye_west) March 27, 2017

Either Alexander Skarsgard has the biggest dick on earth or they used a rubber hose of some sort on Big Little Lies tonight pic.twitter.com/an75GF3vn1

– KFC (@KFCBarstool) March 27, 2017

TheWrap, in an attempt to solve the, ahem, big mystery, reached out to HBO and have yet to hear back on whether audiences saw Skarsgard’s real (or fake) penis.

HBO is known for not shying away from nudity. Skarsgard also showed his penis as Eric Northman on HBO’s vampire series “True Blood.” And in the current season of “Girls,” Matthew Rhys played a character who took out his penis for Lena Dunham’s character Hannah Horvath, but TheWrap confirmed that that part was indeed a fake.

'Big Little Lies': Who's Dead and Who's the Murderer? (Photos)

The central plot of HBO's "Big Little Lies" revolves around someone's murder, but the show plays coy with the details, including the identities of both the murder and the victim. The series is a fairly straightforward adaptation of Liane Moriarty's 2014 novel -- at least so far -- but here's a rundown of possible scenarios.
HBO
Madeline (Reese Witherspoon)

Why she might be dead: It would be pretty surprising if any of the three main women turned out to be the victim, but Madeline clearly isn't afraid to make enemies.
Who probably killed her: The violent incident with Renata's daughter seems to be setting up a rivalry between the moms, but Renata (Laura Dern) doesn't seem like the type to get her hands dirty. Perhaps her "best friend" Harper?
HBO
Madeline (Reese Witherspoon)

Why she might be the killer: Witherspoon brilliantly plays Madeline like a rubber band ready to snap at any minute, so it wouldn't be a huge surprise if she were pushed to murder.
Who she probably killed: Though much is made of her contentious relationship with Bonnie (Zoe Kravitz), the brunt of Madeline's resentment seems to be aimed at Nathan (James Tupper).
HBO
Celeste (Nicole Kidman)

Why she might be dead: Celeste and her husband, Perry (Alexander Skargard), are portrayed as the perfect couple, but what happens behind closed doors tells a different story.
Who probably killed her: Perry has a proven aggressive side, and has already gotten physical with Celeste once.
HBO
Celeste (Nicole Kidman)

Why she might be the killer: We don't know much about Celeste after one episode, but Kidman's performance hints at much more happening below the surface. Bottled resentment seems to be a recurring theme on this show.
Who she probably killed: Perry.
HBO
Jane (Shailene Woodley)

Why she might be dead: The circumstances of Jane's move to Monterey are shrouded in mystery, but sleeping with a gun under her pillow seems more like the behavior of a murder victim than murderer.
Who probably killed her: Whoever prompted her to get that gun to protect herself.
HBO
Jane (Shailene Woodley)

Why she might be the killer: If the person she's hiding from were to show up, we already know Jane's prepared to deal with that threat.
Who she probably killed: Could Ziggy's father be a bigger part of the picture than she let on?
HBO
Perry (Alexander Skarsgard)

Why he might be dead: Who wouldn't want to kill this guy?
Who probably killed him: Celeste probably wants to kill him more than anyone else.
HBO
Perry (Alexander Skarsgard)

Why he might be the killer: A good rule of thumb for TV watching is if the show has a Skarsgard, he will most likely turn out to be a murderer.
Who he probably killed: Most likely Celeste, but it could be anyone, really.
HBO
Nathan (James Tupper)

Why he might be dead: "Revenge" fans will remember Tupper as David Clarke, the father who died not once, but twice, on the ABC primetime soap. So there's precedent for his death serving as the inciting incident on a show about rich white people.
Who probably killed him: Madeline seems like the obvious choice here since she's his ex, but let's not rule out the possibility of second wife Bonnie -- or even Madeline's second husband, Ed -- doing something crazy.
HBO
Nathan (James Tupper)

Why he might be the killer: The first episode doesn't reveal much about Nathan, but all of the men are a little bit suspicious, aren't they?
Who he probably killed: Madeline.
HBO
Renata (Laura Dern)

Why she might be dead: Renata is rightfully upset about her daughter's injury, but she refuses to let the incident go by without making someone pay for it, and all of the mothers seem willing to go to extreme lengths to protect their kids.
Who probably killed her: Jane's son Ziggy becomes Renata's patsy, and we already know that Jane owns a gun.
HBO
Renata (Laura Dern)

Why she might be the killer: Again, mothers will do anything to protect their children.
Who she probably killed: Jane, or the mother of whichever kid actually tried to strangle her daughter.
HBO
Ed (Adam Scott)

Why he might be dead: Would anyone really miss him? Not even Madeline seems to like her new husband very much.
Who probably killed him: Who cares?
HBO
Ed (Adam Scott)

Why he might be the killer: The fact that Adam Scott grew a beard for the role is pretty suspicious.
Who he probably killed: Of the adults on the show, Madeline is the only one he has any connection to so far.
HBO
Bonnie (Zoe Kravitz)

Why she might be dead: Of all the mothers on the show, Bonnie seems like she fits in the least. If something were to go sideways, at least Jane has Madeline and Celeste to stand up for her.
Who probably killed her: Maybe Madeline?
HBO
Bonnie (Zoe Kravitz)

Why she might be the killer: The yoga teacher who objects to foul language turning out to be a murderer would be a pretty good twist.
Who she probably killed: Nathan or Madeline.
HBO
Ms. Barnes (Virginia Kull)

Why she might be dead: The first grade teacher handled the incident with Renata's daughter exceptionally poorly.
Who probably killed her: Any of the parents.
HBO
Ms. Barnes (Virginia Kull)

Why she might be the killer: She probably isn't, but anything is possible!
Who she probably killed: An overbearing parent like Renata is any teacher's nightmare.
HBO

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Putting aside Liane Moriarty’s novel on which the HBO show is based, let’s engage in some wild speculation

The central plot of HBO's "Big Little Lies" revolves around someone's murder, but the show plays coy with the details, including the identities of both the murder and the victim. The series is a fairly straightforward adaptation of Liane Moriarty's 2014 novel -- at least so far -- but here's a rundown of possible scenarios.

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