“You like Peter, Paul and Mary?” Jack Byrnes (played by Robert De Niro) asks Greg Focker (Ben Stiller) in Meet the Parents, as “Puff the Magic Dragon” starts playing in Jack’s Buick. Greg hesitates, then says, “Sure. ‘Puff the Magic Dragon.’ You know, I actually wrote a paper about this song back in college? About how it’s, y’know, about weed.” “What?” “That ‘puff the magic dragon’ meant to light up, take a hit. And to bury that in a kiddy sing-a-long song — man, that took some guts.” “But…‘Puff’ was just the name of the boy’s magical dragon. … Are you a pothead, Greg?” “What? No! I mean, sure, I’ve had offers, who hasn’t, but …”