1. The act of female masturbation

2. Oral sex performed on a female
"I spent last night frosting the cupcake for Michael's viewing pleasure"

"Last night I frosted Jenny's cupcake"

by Jenny C. Melons January 16, 2006
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when a male makes circular motions around the outside of the vagina with his penis while cumming
Tod: Yea dude, I was frosting the cupcake last night with Rebecca.
Romeo: Wow dude I need to do that.
by crupcaqke October 14, 2016
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To cum on a woman's breasts. Preferably B or C cups.
She didn't want frosting in the oven so I was frosting her cupcakes instead.
by collapsing-a-hole March 21, 2010
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Daryl 1: I heard you hooked up with a girl
Daryl 2: Yeah she let me frost her cupcakes
by jkels32 February 12, 2014
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Frosting your cupcake can be defined as when a man shoves his finger into a woman (or man)'s anus, resulting in poop ending up on one's finger. Once the finger is removed, you bake a cupcake and frost it with the unclean finger, and later eating said cupcake.
"Hey Rory, I was totally frosting your cupcake last night"
"Yo, thanks Steve, that was so nice of you to frost my cupcake."
"Anytime, I had fun...frosting your cupcake."

"Word"
by BigSexy123 October 1, 2013
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To cum on a woman's breasts. Preferably B or C cups.
She didn't want frosting in the oven so I was frosting her cupcakes instead.
by collapsing-a-hole March 21, 2010
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