Justin Bieber and Madonna play "Never Have I Ever" on "Ellen"
Never have I ever....smiled so much while watching a segment on "The Ellen DeGeneres Show."OK, maybe that's not 100 percent true, but this clip is definitely up there on the smile-worthy chart.In a new segment, Madonna, Justin Bieber and DeGeneres play a game of "Never Have I Ever" -- and needless to say, we learn a bit about their lives...mainly their sex lives, actually.They answer whether they've hooked up with siblings, for instance. Guess which of them have?Madonna, 56, has been doing promotion for her new album, "Rebel Heart," while Bieber, 21, was the subject of a Comedy Central roast over the weekend. The special will premiere on March 30.