Dear Mr. Motorcycle Man,
When you come to a four-way stop, or any stop sign really, you are supposed to actually come to a stop. A complete stop, in fact. You most definitely are not supposed to just roll on through it. Especially when it is my turn to go through the intersection.
Did you not notice that I was in a car? A car that could have easily crushed you if I hadn't hit my brakes to avoid hitting you? How stupid do you have to be to run a stop sign on a motorcycle?
Grow a brain and pay attention next time, F*cktard!