There most definitely have been times where I've felt the need to withdraw from the situation due to the overly friendliness of perfect strangers. The ones who bother me the most are those who think they can pat me on the back or arm and it's okay. So far, I've managed not to kick somebody but I have told people that I don't care to be touched. I just don't like the fact that some people have no respect for other people's physical boundaries and think they can just pat and tap whenever they please.