dung cavity
A moist hole in the ground into which a person in the wilderness deficates
Dude don't poop right next to me, use the dung cavity next to that bush!
dung cavity
When someone defecates into the mouth of another and rapid tooth decay occurs resulting in the formation of a cavity
My girlfriend finally let me poop in her mouth, but broke up with me after she had to explain to her dentist how she got a dung cavity.