Being Yellow Diamond is a tough job. It's hard enough running a galaxy-spanning Gem empire and ordering the lives of billions of your subordinates without one of them ruining your long-planned superweapon, sparing your least favorite planet, and calling you a clod to your face. No wonder she's so ticked off on this charming Steven Universe T-shirt, which features Yellow Diamond making the world's best face and her immortal line, "HMMMMMM?" Great words from a great leader.