Nasties (noun) - a collection of horrible people, as one might find in a prison.
That's a 'Category A' prison, where they keep all the nasties.
A person who's a bitch and a snitch, all they ever do id talk about themself + their annoying
Emma: Did you see that 3 pointer I made yesterday
Marly: Nasty
Doing The Nasty's is how ratchet people usually say Masturbate.
"ooooo shit time to be doing some nasty's ooooh boii"
Anything gross. What most of y’all are who use UB to get off. If you’re nasty, go to church.
“That cat food was nasty!”
“Son… I saw your urbandicionary history… nasty!”
I was Yogi "nasty" last night (I didnt use any condoms last night)
George be scratch "nasty" (George is always scratching himself)