This a joke I heard years ago. Wish I had written it:

A guy was going at it hard with a prostitute at the local whore house. They were writhing around so much they rolled off the bed, out the window, onto the overhang, down to the sidewalk and were STILL goin at it.

The town drunk was watching the whole thing and knocks on the door. The madam answers and says, "Go away, we don't serve drunks."

He replies, "That's fine, I just wanted to tell you your sign blew down."