Coffee

A man walked into a restaurant and seated himself. Soon, the waitress came over to take his order. "...and to drink?" she asked. The man said he would like coffee. The waitress promptly returned with a cup of coffee, but spilled it on the man's lap when she stopped at the table.

"Oh my god, I am so sorry!"

"That's OK" the man said sopping up the puddle on his pants with his a napkin- "but tell me, is this regular or decaf?"

"Regular..." she replied

"Oh great, now this thing is going to be up all night!"