The crusty crunchycorner of a brownie. Someone is a corner brownie if they are lesser than the group. Corner brownies are least likely to be chosen for a team group project.
I gave Jackson and Clairecorner pieces of my puzzle, they're such corner brownies
A term widely used in various rural community clubs and industries (such as 4H , Dairy Farmer's, etc.): when one or more individuals participate in anal sex while in a barn and shit finds it's way onto the hay...you have a "Haystack Brownie".
"When Cecil climaxed, he turned the wholeloft into a Haystack Brownie".