Anal Filbert
While in the act of mutual masturbation, shoving shelled peanuts or peanut M&Ms into the anus of your partner until he or she climaxes thus shitting out all of the peanuts or M&Ms.
Bro, I've been cleaning my house all day because I met this girl at the bar last night and she gave me the best anal filbert of my life, there was shit everywhere.