cy'all

Contraction of slang "cya" (see you) and the contraction "y'all", (you all) which is typically used in South and West-Coast United States

It is a short-hand term for saying "See you all later"

Alright I gotta go to bed. Cy'all tomorrow

Rizz

Short for charisma. Usually used in the context of having pulled a girl.
It has spawned its own verb, to have "rizzed" someone up, which is the past tense conjugation.

"W rizzzzzzzzzzzzzzzzz" - Average middle school boy that sounds like the do the roar kid from shrek after talking to a girl without her throwing up