Poopbag Brain Thrusts

When one uses their collection of feces contained within plastic foil bags to obliterate their sexual partner's throat in an act of sodomy.

Chad: "Yo Tim, what ever happened with you and that girl last night?"
Tim: "Oh bro, my throat is so sore! She whipped out her fecal bag and performed poopbag brain thrusts on me for like an hour! We're meeting up again tonight!"