Dwai
An acronym for the phrase, "Don't Worry About It." Used when an annoying ass person tries to get into a conversation or when you just wanna keep something on the DL. When used on aim it is just spelled dwai but when used in person it is pronounced "D-Way".  
You: Dude did you hear about megan making out with chelsea at the party last night?
Kyle: Yeah man i saw it, those two girls are sooo slutty
Noob: HEY GUYS!!!11 what girls are u talking about??!!??
You: Dwai bitch...
Noob: ahhh c'mon guys im cool ill keep it locked up in the grilly
Kyle: noob...stop trying to do it....dwai