To fart in one's hand and proffer the resulting smell to an unsuspecting victom's nose. In a motion akin to letting someone smell fresh baking.
John: *arms outstreched, handscupped, uncups hands under jane's nose* Jane: OMG WTF! You me a cupcaking you cunt!
By halfbrick
The art of ensuring that your fart is smelt by your victim, and possibly even breathed in. Basically you cook up a real stinker in your colon, CUP your hands over your "exit-hole", let loose taking care not to 'spill' the contents, and waft/push/throw into your victims face so they get the full 'benefit'. Then casually remind them that fart is made up of minute microscopic poo-particles and they have in fact, 'just eaten your shit'.
Jed sneaked up on Gaz, with a real devestator lodged in his bowel. Discretely he moved his hands to his arse, farted whilst simultaneously cupping then unleashed his stink on Gaz'z person, Cupcaking him. Gaz gags and Jed laughs his ass off.
By Jeddycakes
when you guff in your hand and then open your hand infront of another person's face.
I cupcaked your nan!
By bass in your face
Cupcaking = Playing boyfriend and Girlfriend for a short period of time. Not exceeding 48hrs
I was cupcaking with this Ho last weekend in Vegas.
By uno-siete
The act of farting into your own cupped hand, then throwing the cupped fart into an unsuspecting friend/relatives face.
Rob:"Hey! You want a cupcake?" George:"Yeah sure!" Rob farts into hand. George:"Oh no, you're not cupcaking me this time" George runs away.
By Robryan