You see: You bop around like a silly teenager. Others see: <Player> bops around like a silly teenager.
BOP <self> You see: You bop yourself over the head. Others see: <Player> bops himself over the head.
BOP <player> You see: You bop <Player>over the head. Target sees: <Player> bops you over the head. Others see: <Player> bops <Player> over the head.
BOP You see: You thump a <item> lightly with your fist. Others see: <Player> thumps a <item> lightly with his fist