A guy shits on somebody while they are asleep, uses his ass to make it flat like a pancake, then jizzes on it to represent powdered sugar and syrup.
"Dude, Jake passed out and I gave him a Boston Pancake! He was pissed"

"Man, you are just wrong..."
by C. Nile Demencha December 11, 2008
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The act upon which during sex the man takes a shit on the girls chest, afterward's he proceeds to rub his ass on her tits to spread the shit around and then finally cums all over the shit.
Craig: "Oh shit dude, we were so fucking drunk that night that i gave her a Boston Pancake!"

Nelson: "HOLY SHIT!"
by itsbinkl182 May 4, 2010
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The newest dance craze.

Replicates the actions of the little known Boston Pancake sexual act but the dancer remains fully clothed with a stoic expression.
Can be done individually or within a group.
Man check it out! That girl knows how to dance the Boston Pancake! Let us all join in!
by Stekel March 20, 2009
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