When you are having sex, and you pull out just before you cum and tell your partner you'll be finishing in their mouth...at the last second tilt your cock upward and bust one in her eye while screaming FAKE OUT!
The Fake-Out, according to urbandictionary.com apparently has to be used in a sentence.
"I was fucking my girlfriend last night and i totally pulled the fake out...we haven't spoken since."
von IRA PKP 19. Januar 2006