Should I punch this new guy who claims he has some mental condition(probably autism) for touching my stuff? I think he is doing it on purpose.
Sorry that is happening to you. Are you sure he has autism?
I heard about him talking to himself and it seems like he has it.
This person obviously is mentally challenged and did not mean anything by touching your stuff. Treating them with disrespect as a human being is not correct. Understand where this person is coming from before you go off half-cocked and start punching them.
I'm going to punch him on the nose.
Maybe talk to him instead. One thing I've learned is that you can never win or get people to support you when you hurt a disabled person. They will get all the sympathy even if they are wrong, so you probably do not want to punch him, or people in your social circle will think you are mean.