Ashton Kutcher and His New Castmates Are a Real Scream (Photo)

Charlie Sheen's replacement shares a primal moment with Jon Cryer and Angus T. Jones at the CBS upfront Wednesday

Has Ashton Kutcher already fallen out of favor with his new "Two and a Half Men" colleagues, Jon Cryer and Angus T. Jones?

Naw, not really; the three new amigos are merely pranking the world, via Mr. Demi Moore's ever-active Twitter account.

Following Wednesday's CBS upfront presentation to advertisers in New York, Kutcher — who last week inked a deal to step in for a departed Charlie Sheen on Men — headed over to Carnegie Hall for a little jovial fun.

Also read: "Ashton Kutcher on 'Two and a Half Men': I Kind of Won the Lotto"

"First cast argument 2.5 men (@ Carnegie Hall (Isaac Stern Auditorium / Ronald O. Perelman Stage) w/ 39 others)," Kutcher wrote.

Apparently, "practice, practice, practice" isn't the only route to Carnegie Hall — a little bit of shouting will get you there too.