So enlighten me, WTF are they talking? It's certainly not english.
slang...just like if you were into BMX, they are talking about "coping", "right hand kidney", "DIY trannies" , "firing out manual lines", "360 whip", "big spines", "big back rail"...
Each genre or subculture has their own slang...the hip-hop has it's own slang, and people from various cities add to it---top it off, what might be a word that mean something in one city, means something else in another...