Top Definition
When a man has sex with a woman who is pregnant with another man's baby.
1. If you try to flag the ship, I'll fucking break your ass.

2. Baby, don't tell me you let someone flag the ship!
by viatheinternets April 16, 2009
5 Words related to Flag the ship

Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from daily@urbandictionary.com. We'll never spam you.

×