I pound my bed repeatedly when I'm lying down in bed, and sometimes when on my computer, I think about something that enrages me or has enraged me in the past or today, I pound my desk in violent rage. In social settings, I usually twist my hand, a sign that I'm becoming angry, but can't express it in front of others. I sometimes punch the wall in social settings too.
Once in my hone, I banged my head in the wall repeatedly, I was extremely enraged over something I saw. That happened in February, 2017, and not because of Valentine's day. It happened in late February.