1 definition by Goat balls?

Top Definition
a sexual act when you fuck a chick (or guy if your gay) in the ass till you cum. then when they shit you shove it in their mouth.
Person 1: Dude Dave gave Emma a Marshmallow Brownie last night!

Person 2: Really?!?!? Did she eat the whole thing?
by Goat balls? September 15, 2011
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Buy a Marshmallow brownie mug!