An abbreviation of the word "sustainable" used to quickly tag any positive, environmentally-sustainable action, thought or deed (or to dis any stupid, NON-sustainable action thought or deed).
I see that you're now using a two-sided printer; very susty!
Bottled water is NOT susty.
I'm telling you, it's susty to shower with your buddy!
Hey, your driving one fucking block to pick up smokes just ain't susty.
anything negative: dirty, skanky, stinky, shady, and so forth.
Susty does not come from super + nasty.
You need some peanut butter to go with your toe jam, man yo feet are susty.