A Mud Glove
When you stick your finger up your partner’s ass and they go full on poop tsunami while screaming like a kid who just got spanked.
I shoved my finger up her butt and she exploded like a fart machine.
He took a finger up his ass and it came out like a noodle soup explosion.
She screamed like a banshee while I gave her a finger up her butt and she shat like a dragon.