Slang Dictionary, in progress

On the low    =     secretly, unexpectedly

Wavvy    =     cool

Swag(ger)    =    nice, cool, awesomeness

I'm hype     =    I'm excited

Tight    =  angry

That teacher's got me tight    =     that teacher's pissing me off

Shakin my head     =     you're stupid, what are you thinking?, i don't want to deal with you

Diablo!  =  I know this means devil in spanish, but I have yet to figure out why students run around saying this randomly

You're wiling    =   you're crazy

Thats flee    =    that's cool

She's feening    =   she's getting overworked/overexcited

OD    =  very  (as in, "this is OD hard")

Dead ass  =  I'm serious.