A delicious combination of naughty and nice. Not to be confused with the imitation "malicious muffin", an angry cupcake always has sprinkles and a cherry on top. Often called a pretty delight with a naughty mean streak.
Dan: Cindy seems like a real tart.
Jeff: Nah she's just one angry cupcake.
When a chick is giving you a blowjob, you pull out prior to ejaculation, skeet on top of her head on her hair. She looks like a cupcake and is now angry because she has to wash her hair.
Jake: Hey Chris!
Chris: What's up? Why is Patricia so mad at you?
Jake: I gave her an Angry Cupcake.