Definitions by SweetPeaASMR

sore muffin 

Someone who is a party pooper, or who chooses to be offended.

Dude 1: "Hey wanna join the party? We could use an extra person!"

Dude 2: "No thanks. I wasn't invited."

Dude 1: "Don't be such a sore muffin. Lol"

sore muffin by SweetPeaASMR May 5, 2018