I'd be dead by now if I couldn't laugh at myself, don't take your inability to handle these people too personally. It's funny, I know I absolutely don't care about what these people think of me, and yet my every action in front of them reflects the exact opposite.
Getting over this is tough, but you just have to do it. Gather some courage and play the daredevil, just dare a little. Dare to what? I don't know, try teasing them with stuff you know gets them to go crazy on you and just laugh when it happens. Anything to show yourself that you can somewhat control this person using words and body language.
PS: 127 posts, that must be fate jesting at me (My home address used to be 127)