one of the many irritation things said by confused young white guys who wear a baseball cap with a basketball jersey every day

Originally originating as latino slang in the 80's to mean "I swear to you on my life what I tell you is true." It eventually was picked up by rappers in the early 90s to mean "I promise." Eventually the all rappers were using it but it wasn't the "in" slang until E-40 used it every other word (in his everyday speach). Eventually it was hear on the movie "Big Money Hustlas" starring ICP and Twiztid where Big Stank (Jamie Madrox) and Lil' Poot (Monoxide) would spout it as there catch phrase. After seeing this movie John Cena decided to use it as his own catch phrase.

you mean what you said. it also means that whatever comes out of your (and john cena's :)...)mouth is what's true to yourself and you ain't lying about it, and people can't change you and what you just said. usually connected with untouchable.

You keep your promise whatava heppuns

A statement of emphatic, enthusiastic agreement; an enthusiastic way of saying "yes."

Said in response to something that person 2 is in agreement with.

It's just basic thuganomics!