Definitions by Huggabear

Wisconsin Sledgehammer 

When you cup your penis using the scrotal sack so that the balls are in line with the head of the penis, then use as a hammer on someone's head. Similar to a mushroom stamp.

I woke up to the smell of musty cheese, only to see my friend trying to give me a Wisconsin Sledgehammer

Wisconsin Sledgehammer by Huggabear July 13, 2012