K.O.C.
A K. O. C. is a person who gets so mad at small things they act like the sky fell on them.
He got told he looked like a donkey and flipped out. K. O. C. behavior.
She got called a f***ing rookie and started screaming. K. O. C. mode activated.
He lost a game of cards and yelled at the table. K. O. C. energy.