The act of picking your ass for shit or sweat and going up to a buddy and sticking your finger in their ear and yelling POO WILLY! Very similar to the wet willy except for the source of material put on finger.
Ryan Garringer and John Nelson are homos so i gave their bitch asses a poo willy.
What Would You Do If There Was A Child Right In Front Of You? “I’d grab your buttcheeks and pull out my willy stir your asshole like a hot bowl of chili.”