Do You Know What I am Saying?

A reader writes:

My stepson came over to visit. He is a lifelong criminal and "num sayin" follows every sentence. We watched Butters and my stepson rolled in the floor laughing. He promised if/when he goes back to prison, he plans to change the lexicon with "do you know what I am saying." 

Thank god for South Park. I am pretty sure I am my wife's bottom bitch.