Two Scoops of Peanut Butter
A sex act where the man dips his testicles (one at a time) into the consensual sex partners anus and proceeds to then put said testicles into the parters mouth. The brownish fecal matter on the testicles gives the scroctum the appearance of being two scoops of peanut butter
Last night we were so drunk that she let me give her two scoops of peanut butter. We were both so ashamed this morning