A business man took his blonde assistant along with him to attend a convention. To keep things strictly professional, he booked separate rooms at the hotel. The following morning he waited patiently in the lobby for her to come down, but to no avail.
He finally had to call her room to find out what happened. The assistant answered the phone in a sobbing voice. “I can’t leave!” she cried pitifully.
“Why not?” asked the business man.
“There are only three doors,” she explained. “One is the bathroom, one is the closet, and the last one has a sign on the handle that says, ‘Do not disturb’!”