I explode (inside), lol.
I'm quite terrible then but it depends on the situation what I'll do or if I'll do anything. People around me get to listen to me A LOT when I start my "I'm so pissed right now" talk. People also certainly know and feel (emotionally) my anger. I'm not very good in hiding my emotions except my sadness. That I can hide when I don't want to show it. Other emotions just show whether I want it or not.