cacoproctia
/kɑkoʊˈprɒktiə/ (kä-koh-prok-tee-uh)
Definitions
1. noun
A rare or obsolete term used to describe the act of using one’s buttocks to wipe one’s nose.
“The Victorian-era etiquette book warned readers against engaging in cacoproctia, citing it as a gross display of poor manners.”