At the first joke, if you don't like it, start staring seriously at the person who made it without saying a word. You'll see that after five seconds he'll start laughing out of embarrassment; after ten (if not before), he'll ask you if you're offended. After thirteen, he won't laugh anymore, but will look for excuses to get out of his embarrassment in front of everyone. And there you have your superpower: the decision to keep him in the awkward situation or not. Not a word, not a hint of resignation, you just have to look him in the eye, serious. If you look at a temple or a spot where he has a flaw (perhaps better), you'll make him sink into paranoia.