If I was in a bad mood it depends on the day. I'd either challenge said person who put me in the bad mood, defeat them and them banish their souls to endless torment, or if everyone was ticking me off I'd go on a rampage, then erase everythign as if it had never happend leaving their memories of the event.
Welcome one and All to the Jesters Carnival, where the prizes are greater than your wildest dreams, but the nightmares here shall silence you before you can even scream.