Swick muffin 

I don't know I just made it up; can't just put a word up and say it's a real word

Shut up Geoff it's your birthday you swick muffin

Swick muffin by Sophielol October 2, 2015

Stick It In a Muffin  

Stick it in a muffin (also phrased "place it in a muffin") basically means shut up, stop, yeild, do not continue...

Brittany: "Hey did I tell you about my date with Brad?!"
Lucille: "About a million times. Please, stop talking about Brad."
Brittany: "So, we went out to the movies, and-"
Lucille: "Gosh, Brittany, STICK IT IN A MUFFIN ALREADY!"

Stick It In a Muffin by kel z the super saur February 4, 2009