"I don't know why people think I'm this ad-lib dude"

In this quote, Mike Epps is revealing confusion and aggravation over the perception that he is understood for improvising or making things up on the spot. He appears to be questioning why people have this belief about him and maybe even feeling misinterpreted. It could also suggest that he feels limited or pigeonholed by this label, as if it doesn't properly represent his skills and capabilities as a comedian. In general, the quote highlights the detach between how Epps sees himself and how others see him, and the disappointment that can feature being misinterpreted or misrepresented.