dry rott 

The decomposition that occurs on the crotch of panties when women have crotch rott

The dry rott in sara jacksons underwear ate a hole right through the crotch of her panties. *KKKRUNCH*

dry rott by MinDPhuK April 5, 2003

Dry-rotted 

The premature thumbilation of your partners anus.

Dryrotting occurs when a foreign object enters the balloon knot wet but becomes dry while inside.
Dry-rot causes pain and discomfort when reattempting and ultimately ruines the off-road journey down that dirt road.

Y: babe stop. It hurts
M: I might have dry-rotted your asshole, my bad.

Dry-rotted by Ass Mechanic April 5, 2021