My advice is either a) Just tell them they are jerks and should just stop. A lot of times, people don't realize that what they are saying is actually hurtful and it's a joke. Try to assume the best about them, at least initially. b) If that doesn't work, then you have to find new people for friends (I'm assuming these are friends of yours). However, this should be a last resort, and really the best thing you can do is to try and just ask them to be nicer to you.