Then you forget to pull up your zipper.
It's worse when you forget to pull it down.
Long ago when men cursed and beat the ground with sticks, it was called witchcraft. Today, it's called golf.
A little girl came home from school and said: "Mommy, today in school I was punished for something I didn't do."
"That's terrible! I'm going to speak to your teacher about it. Now what was it that you didn't do?"
Laugh Like There's No Tomorrow: Over 2,000 jokes from the Internet, Volume 2
From Day #24 in a second complete manuscript compiled by Richard L. Weaver II