Okay, it looks like a normal bank, you see a shot from behind a "Teller" a youngish looking chick, and a line of men waiting to make a deposit.

The Girl says "Next" and a guy steps up to her window and says he'd like to make a deposit, the girl then drops to her knees, under the counter is open, and starts to blow the guy.

The Camera pans back and we see other tellers involved in similiar action.

You can run the tired old joke about a female comming in and wanting to make a deposit, but mumbling through it because her mouth is full, she could then snowball it to one of the other tellers.

All the teller windows could say "Head Teller."