Click him to feed him. Try not to get yourself shocked. Press space to feed him. You must pet him again to keep him from becoming a food hog. Remember he isn't usually as tame, so he may get angry when you pet him. The server somehow made this so as you pet him, he'll start to relax, but sometimes he may still get mad. If you press a certain key something will happen... and you will have to press the green flag to snap him out of it.