You are who you are, and trying to cover that up just leads to further issues down the line.
To some degree, a skill you can learn is to accept it and let it roll off. Laugh with them. Because all the time you spend dwelling on what was said to you just drags you down into a pointless funk and reframes how you think about yourself.
You’re sensitive, that’s an asset. If your friends want to exploit that, ask them to stop and find better friends if they won’t.