Usually an adjective for a generic or dopey female. One that usually wears tacky or 'cheesy' clothes; ie: Budweiser
tanks and mom jeans would indicate a 'cheesemuffin'.
Jessica Simpson was a total cheesemuffin when she didn't have a stylist. The crimped hair and leopard unitards personified her as a cheesemuffin.
It is the best thing you will ever taste and the best way to annoy someone. All you have to do is add grated cheddar cheese to a muffin recipe and sprinkle some on top of the muffin before you bake it. It is full of deliciousness and will creep your friends out with the idea of it, but it's very good! Happy baking!
Bob:"Hey u want some of my Cheesemuffin?"
Friend:"Eww no what is that?"
Bob:"It's a muffin with cheese in it! It's actually really good"
Friend:"Ok... so have you seen any movies lately?"