1 definition by smalltownapple
A combination of the word sus ("suspicious") and crusty. Used to describe things, places, or people that are strange/questionable and disgusting/musty at the same time.
Yo, what's this susty black stuff on the shower tiles?
Omg, Jeremy is so susty! I just saw her pull three old bananas out of her backpack...
Omg, Jeremy is so susty! I just saw her pull three old bananas out of her backpack...
by smalltownapple September 8, 2019