The act of shoving your fist into your girlfriend's ass down to the shoulder, then picking her up and wearing her like a glove, then slamming her to the floor and quickly pulling our your arm in order to rupture her colon, then beating her mercilessly until she is dead. (This will not work with a wife. In addition, you can not have sex with her dead body or your penis will turn into cabbage.)
When you slip some laxities in your girls onion for dinner and convince her to have sex and your giving it to her in the ass while we proceeds to shit on you in a full auto