men and ufo

Man and UFO
What's the difference between an intelligent man and a UFO?
I don't know, I've never seen either one.

Thinnest book
What is the thinnest book in the world?
What men know about women.

Expensive stereo
Only a man would buy a $500 car and put a $4000 stereo in it.

Thickest book
What is the thickest book in the world?
"What Men Think They Know About Women"