When you make sweet love to a girls asshole and cum inside her, she then farts ever so slightly after you pull out. leaving a frosted cum cupcake sitting on her bootyhole.
I was fucking Sara so hard in the ass I came inside, then when I pulled out she farted cum out and it lay there on top of her asshole like a filthy cupcake.
by Grumpy blumpkin June 20, 2018
Get the Filthy cupcakemug.