When someone carves out a halloween pumpkin, and then takes a massive shit in the pumpkin. Mostly used for hurling at things
Man that was a good throw Timmy, you hit Nigel right in the face with that poopkin. Hes got shit all over him and he looks unconscious.
A term that is used when you are having sex with a pregant women, and all of a sudden her fetus drops down and gives you a handjob.
Man i had a crazy night last night. I was fucking this pregnant bitch, and it was good as hell too until she performed a fetus drop on me. I nearly shat myself, i pulled my dick out of her fetus's hand and i was out.