From what I have read, this could be taken in one of two ways (In my opinion.):
One:
Your friend is bullying you/pressuring you. I advise you to talk to any other friends you may have, a teacher, a parent, or someone you trust.
Two (I regularly misinterpret in this way):
My friends insult each other in affectionate ways and laugh in a way that they aren't mocking each other. From text, I don't know if your friend is being affectionate or insulting, so I would ask someone you trust to help you understand, or ask the friend in person. Being touchy and close, yes, can seem intimidating to some people or painful, but others find it affectionate to share casual touches.
I hope I helped.