I waited for a very long time for my number to be called at the Department of Motor Vehicles to renew my driver's license. As I approached the window, the clerk asked how she could help me.
I replied, "I need to get a haircut, can you save me my spot?"
She said, "Why didn't you get a haircut before your came here?"
I replied, "I didn't need one before I got here!"
Knock, Knock!
Who's there?
Doctor
Doctor Who?
EXTERMINATE! EXTERMINATE!
A man walks into a dentist office for his third filling that week. He goes into the examination room, sits back in the chair, and waits for the dentist to come in.
She walks through the door and before she begins, she says, "You know the drill."