Gloria Cleary: Don't ever leave me!
Jeremy Grey: Ever.
Gloria Cleary: Good. 'Cause I'd find you!
In the scene where Todd and Jeremy are in the bedroom together and Todd is lying on top of Jeremy asking to play "tummysticks", - right before Sen Clary is about to come in and Jeremy begins to panic, watch Jeremy as he's lying on the bed talking. You hear him say about three sentences, but see his mouth move for about one from the left side view of his mouth.
The "Lock It Up!" discussion in the movie was completely improvised by Vince Vaughn and Owen Wilson.