Buttpussy 

The border layer of epidermis between a females butthole and vagina.

Man, I totally slipped out and stuck it in her buttpussy.

Buttpussy by Dirtmgurt187 November 2, 2023

manboy buttpussy 

Someone that looks or acts like a boy who's anus is frequently penetrated by a penis.

Jill wanted him to stick it in her manboy buttpussy, but when she pulled down her pants he ran away.

manboy buttpussy by AimeeB January 24, 2023