Its natural that we react with aggression (or flight or freeze) when under pressure. Our monkey brains translate modern life all too easily into a mortal threat. And to be honest, my own brain translates a medium filled train car into the equivalent of a stampede, so i've been there more often than i'm comfortable with. No harm done; in the end, it's just a internet forum.
Take care of yourself, ok?
or, y'know, you could sit down. saves on cleaning even when you fail at handling your dick.