Rob Lowe makes his return to network TV on Tuesday with the premiere of his new Fox comedy “The Grinder,” but before then he dropped by “The Tonight Show” to have some fun with Jimmy Fallon.

The pair played a game of Password and recruited “2 Broke Girls” stars Kat Dennings and Beth Behrs to compete against them.

Players are only allowed to give a one-word clue to their partner in order to guess the password.

Also Read: John Stamos Heckles Rob Lowe During 'Grinder' Panel: 'Tell the Truth!'

With words like “wax,” “opera” and “brunch” popping up, Lowe and Fallon took an early lead over the CBS sitcom stars.

The women started to make a comeback, but were stumped by the word “cringe” and some dramatic miming allowed the guys to clinch a victory.

“The Grinder” premieres on Tuesday at 8:30 p.m. ET on Fox.

“The Tonight Show” airs at 11:35 p.m. on NBC.

10 Fiercest 'Lip Sync Battle' Performances: From Dwayne Johnson to Anne Hathaway (Photos)

Jimmy Fallon kicked off the season with "Jump in the Line" by Harry Belafonte, then tackled Madonna's "Like a Prayer" with the aid of a church choir.
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Dwayne Johnson took rival contestant Jimmy Fallon's trash-talking and decided to "Shake It Off" with Taylor Swift, before bringing out the bellbottoms for the Bee Gees' "Stayin' Alive."
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Common went all out with "I Want You Back" by Jackson 5 and ended even higher with Lionel Ritchie's "All Night Long."
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John Legend busted out Juvenile's "Slow Motion" before dusting off the Hammer pants for "U Can't Touch This."
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Anne Hathaway gave the crowd a little "Love" from Mary J. Blige before bowling the audience over with Miley Cyrus' "Wrecking Ball."
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Emily Blunt showed her hip-hop roots with Blackstreet's "No Diggity" before nailing an insane Janis Joplin impression for "Piece of My Heart."
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Anna Kendrick revealed a secret love for Emily Blunt with One Direction's "Steal My Girl," before enlisting Jennifer Lopez's help with "Booty."
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John Krasinski showed off his sick marionette skills for N*Sync's "Bye Bye Bye," then revealed his sexy side by dancing in a glittery dress for Tina Turner's "Proud Mary."
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Mike Tyson gives the audience "Satisfaction" courtesy of the Rolling Stones before (kind of) busting out Salt n' Pepa's "Push It."
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Terry Crews unleashed his masculinity with Run-DMC's classic "Sucker M.C.'s" before revealing his softer, more feminine side with Vanessa Carlton's "A Thousand Miles."
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Boasting the highest non-scripted premiere in Spike’s history and a second season already ordered, the spin-off from Jimmy Fallon’s “Tonight Show” has proved to be an instant success

Jimmy Fallon kicked off the season with "Jump in the Line" by Harry Belafonte, then tackled Madonna's "Like a Prayer" with the aid of a church choir.

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