If we were going to analyze this photo of Jim Carrey and Ewan McGregor locking lips, we'd say that Carrey is way more into it than McGregor, whose eyes are wide open. If you're really passionate about a kiss, you close your eyes and get right into it.

McGregor explained the photo on 'Late Show With David Letterman' (weeknights, 11:35PM ET on CBS), saying they were celebrating their newbie knighthood in France (note the medals). Ok, we'll go with that.

Watch the video after the jump.If we were going to analyze the photo of Jim Carrey and Ewan McGregor locking lips, we'd say that Carrey is way more into it than McGregor, whose eyes are wide open. If you're really passionate about a kiss, you close your eyes and get right into it. McGregor explained the photo on 'Late Show With David Letterman' (weeknights, 11:35PM ET on CBS), saying they were celebrating their newbie knighthood in France (note the medals). Ok, we'll go with that.