Top definition
A sex act in which a guy masturbates using the hole of a donut and his cum lands on the top, and then a girl eats it.
"Dude, did you hear? They were caught out behind a donut shop frosting the donut!"
"Dude, that girl's crazy!"
by Keledine December 22, 2011
Get the mug
Get a Frosting the Donut mug for your mama Rihanna.
"Last night I was so wasted I sat on the toilet to take a dump, and before I could stop myself I'd frosted my donut."
by The Yellow Dart June 28, 2004
Get the mug
Get a Frosting The Donut mug for your sister Sarah.