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After giving a girl a cream-pie she stands above your head, then sitting down somewhat forcefully on your mouth she yells, "Patty Mayonaise!"
Friend:"Ha dude nice fat lip how did that happen?"
Me: "Well my girlfriend gave me a Patty Mayonaise last night. It was so worth it."
by Dave All Cock September 22, 2009
A sexual maneuver performed by slapping the ass of one's sexual partner and then placing two fingers quickly, yet gently, within his/her vagina.

Skeeter attempted to give BeeBee a "Patty Mayonaise" but her dad walked in and kicked him out of Bluffington. I guess Skeeter will settle for a Patty. He is blue.
by jizzy joe August 07, 2007