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1 definition by Baker Matthew

 
1.
n. When you are baking cupcakes and you put too much batter in the little paper trays causing the cupcakes to rise and fatten during cooking. The result looks more like a butt than a cupcake.

Also correlates with Butt Muffins
Well, Lauren put too much batter in so it looks like we will be bringing butt cakes to the party instead. Did you buy more icing?
by Baker Matthew February 14, 2007