grandmotherfucker

One who fucks a grandmother

Steve Stifler in American Wedding is a grandmotherfucker, since he fucks Jim's grandmother.

by Greg Pugh August 14, 2003

Grandmotherfucker

Also known as your grandfather.
Named for mating with his wife to produce children who then become parents of his grandchildren.

Ben: Me and my motherfucker just went to see my grandmotherfucker for Motherfucker's Day (also known as Father's Day).
Gregory: My motherfucker (or my father) is such a charm and treats you with love.

by gregben July 6, 2021

grand motherfucker

When the regular motherfucker just doesn't cut it; a higher level of motherfucker.

It's going down now, you grand motherfucker!

by The Great Dark February 8, 2015

Grand motherfucker

A respected older motherfucker who has been promoted by excelling as a motherfucker or by fucking one or more grandmothers

John is now a Grand motherfucker.

by JAKINTEXES July 10, 2011

grandmotherfuckersonofabatchofcookies

something Dane Cook would say

what Courtney calls Tom

you are such a grandmotherfuckersonofabatchofcookies

by <><><><><><><><><><><><> July 27, 2006