Even if the comments have truth doesn't mean they have to always point it out. If you feel it's getting to a point where it's disresepctful, kindly remind them that you've noted that and would like for them to stop bringing it up. You don't treat them that way (hopefully lol) so you don't want to hear it from them. Hopefully they'll feel too awkward to pick on you after that. If it continues, stop hanging out with them and limit your conversations as much as possible. They don't deserve your company if they treat you poorly.