At first glance, this looks like a rare instance of Fridman just doing what's been asked of him, and not taking the chance to make a joke. On the left, we have a man who's missing a tooth. The man on his right is his son-in-law, and like a good son-in-law, he wants to get him a present. To be more specific, he'd like to replace the missing tooth for him. How kind and thoughtful!
You have to look a little closer here to work out what Fridman's done, but when you see it, it's brilliant. Although the son-in-law's mouth is almost closed, you can just about see that Fridman has taken a tooth from his mouth. That must be the one he used to plug the gap! A family that shares are a family that cares, after all.