When one man proceeds to give another man (usually his gay boyfriend) a blowjob, but smears cake frosting all over the recipient's penis and licks it off. Sometimes the frosting mixes with the recipient's cum.
Dude, I gave Bobby a lovely Cupcake Charlie last night. I used vanilla frosting on his cock, and then he jizzed in my mouth and it tasted really good!
Lovely. Was it any better than the time Johnny sleepwalked into your room and fucked you up the ass?
Actually, yes.
Verb; Male: Multiple cream pies to the face on a heave set girl (Girl with muffin top)
Verb: Female; When a heavey female rides a skinny white male and frosts him with her chocolate frosting (bowl movment) and comes at the same time. Creating a swirl frosting effect. Aka Cinnabun
"I would totally cupcake caked on that beefalow right there"
"Hey bro, you wanna cupcake cake that chick with her muffin top hanging out??"
"Diesnake, you shall not cupcake into my bed to kill me ever again!"
"After coming to life and deciding it was kill or be killed, the radioactive tasty treat cupcaked into the room, paring knife held loosely in it's buttercream, ready to attack."
The "cupcake" is the hand gesture or pose where you use your hands to make a pedestal for your chin and smile. You can do this with both hands or do it with one hand and make a "half a cupcake".
Look at that girl doing the cupcake over there. She is trying to be real cute-sy.
You don't know what the cupcake is? You must be really basic.