Regular Or Decaf Joke

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!"

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