erratically behaving, druggy man in his late 20's / early 30's: "I've been trippin' since yesterday!"
late teens druggy guy: "Yeah! Yeah!"
me (to teen trying to dissuade him from a life of drugs): "Yeah, until you start barfing blood!"
teen druggy: "Naw, man, I never go out of control. How old was your old man when he was 18?"
me: "My old man was 18 when he was 18, and never did drugs!"
teen druggy: "Ahh, he was old school!"