Last night's Saturday Night Live had more than a few pleasant surprises—Jerry Seinfeld! Maroon 5/Train dance off! Sopranos High!—but the biggest of all was the return of Andy Samberg, Lonely Island, and the first Digital Short of the season. Levin sang the hook on "YOLO," which took the irritating catchphrase to its logical extreme ("You Oughta Look Out"). Watch it below, because there's no such thing are too much Purell, kids are lice factories, furniture are killing machines, pajamas can strangle you, and you really should pull out your teeth so you don't bite out your tongue.