Pyromaniac Family

Okay, listen up, you chucklehead. You obviously missed the joke. The son asks if they're pyromaniacs, which is about loving fire. The dad responds with 'Yes, we arson,' which sounds like 'yes we are son', a play on words, see, because arson is a crime that involves setting fire. So it's a pun. Get it? Puns use words that sound alike but have different meanings. You probably also think a good pun is a great crime and you think fire is pretty. Get it now?