a male who appears as a mountain man, having a large gut, tousled hair, and ungroomed facial hair. yetties lack hygiene and social skills, often times unable to speak with females or even other persons. located in the northeast, rensselaer polytechnic institute has an abundant population of such yetties.
dude, that yetty was eating with his hands at commons last night!
by PConsuelaBH@yahoo.com September 18, 2005
2 more definitions
a pain satisfying bowel movement
That's the last time I eat Taco Bell before a nine hour road trip; as a result I had to pull off the side of the road and yetty on the birm of the road.
by Kevin September 04, 2003