Top Definition
1. a name for those who have sexual intercourse with somebody's grandmother.

2. a motherfucker who has earned the title of Great Grand

"Hey Timmy, go fuck your great grandmother, you greatgrandmotherfucker."

"Dude, ur not just a grandmotherfucker, your a greatgrandmotherfucker."
by southparkisforintellectuals April 28, 2010

Free Daily Email

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

Emails are sent from We'll never spam you.