yickity splits

Simply put, lines/rails of cocaine. If you are down with the yak get those yickityspilts ready for snuffing!

Custy: I am lookin for that white lady.
Person: Well, shit, I got some yickity splits right here!

mahli

a.k.a. Molly, otherwise known as the pure form of MDMA (ecstasy). Should be white in color (when it's pure) but is sometimes beige or yellow-brown.

"I got some mahli breh"
"Gimme some dipps!"