Uh...what? No one says "slanging," and everyone knows yayo came around because yay didn't rhyme.
Look up "slang" and "slanging" on urbandictionary.
The term "yayo" wasn't just invented by Andre Nickatina for a song, it actually has meaning. The term "yay" is popular with poser kids in the area where I'm from (the "Yay Area"), please don't try to tell me that Trust's bastardization of the English language is even close to correctly emulating the type of person who he wants to be. Seriously, my previous post was just attempting to say "man, I feel bad. you're trying so hard, you really are. just stop. for the love of all that is holy, just fucking stop."