Continuity mistake: In the gym before the lady says "why do we have to turn around" Roxanne is facing the front and then turns and then when the man says "if we please" Roxanne is turning around again.
Suggested correction: Roxanne was looking back at the janitor guy so therefore she didn't turn around twice.
Continuity mistake: As Lamonsoff jumps off Suicide 35, below him Lenny is farther away from the others in the water.
Other mistake: After Lenny falls off the exercising machine two ladies walk behind him twice.
Continuity mistake: When the police officer is asking about the bus, his radio changes shoulders.
Plot hole: After the tyre, with Higgins in it, bounces on top of the cop car you can't see anyone in the back. When the tyre is stopped and they open the back of the cop car, Braden is inside. They didn't have time to pick up Braden before stopping the tyre. (00:47:00 - 00:48:10)
Continuity mistake: Fabio walks behind McKenzie's wife twice, once when Ronnie pops the yoga ball and again when she says "You missed that, really?"
Continuity mistake: At the recital when the dancers come out, Lenny's daughter is in front of a girl in a yellow blouse. In a close-up when she waves to Lenny, she is behind the girl in the yellow blouse.
Continuity mistake: The "sorry we missed you" paper changes designs at the cable prank scene.