To bend some poor unsuspecting douchebag over and lube up his or her ass then proceed to lube up your feet all the way the way up to your knees. Slowly insert one foot at a time in said douchebags cornhole. When both feet are snugly inserted start mashing and stomping away at the chocolate grapes.
A common Dutch fetish, but also quite popular in Belgium and northern France, involving the purposeful squeezing of feces, occasionally canine, through ones toes for your partners sexual satisfaction!