The VMAs are so youth-obsessed that when any bona fide adults are on screen, they look paleolithic. Even 24-year-old Taylor Swift looks like a soccer mom next to Becky G; perhaps that’s why Drake stayed home. So when the stars of Dumb & Dumber emerged to make dad jokes about Sia and Burning Man, present Best Pop Video, and hype the sequel to their 20-year-old movie, the question that sprung to mind was: Do kids these days even know what Dumb & Dumber is? They might as well have been promoting Frumpy Old Men.