When you shit on your sexual partners chest and then proceed to pat in down with your ass and then cum all over the shit so it looks like a cheesecake but CumCake instead :)
during the act of sex you bake a cupcake and frost it with male seamen after this occers place the "cumcake" on your penis and after this has occurrs you then get a blow job or "head" as you young guns say and enjoy