Oh, to be the sound guy who gets to hear what these two ladies chatted about once the cameras stopped rolling. Our guess, the joy of watching old episodes of The Dog Whisperer. 

Did you miss seeing the devilishly handsome fellows of 1D on the Today Show this morning? No sweat, my pet. 

David Letterman and first-time Late Show guest Lady Gaga, who’s out in full promo forcebehind just-released album Born This Way, basically spent a full 15 minutes ribbing each other on air last night. “You and I are very different,” Dave said to the “Heavy Metal Lover”singer at one point. “I have never thought to myself, I’m just going to wear my underpants.” Gaga quipped back, “Why not? I’m sure you’d look nice if you just took your pants off.” Wow. Excuse us while we go take an ice-cold shower. Watch the playful one-on-one below.