Am I Punny?

Listen up, you knucklehead! This dude is trying to make a joke by mashing up some words. "Sans" is French for "without," and "a'm i pune" sounds like "am I punny?" Get it? So the whole thing means "without, am I punny?" And then he says "piris no" which is supposed to sound like "perhaps not". You probably still don't get it, do you?