Slave terry is a pathetic loser and was Bellatrix's personal slave in real life. He fucked up one time too many but this scene is a good example of the Mistress's rage when he would do something out of line and need punishing. This is real life Femdom! Bellatrix verbally debases him and humiliates him by spitting, face slapping, interrogating, nipple discipline and CBT. She is pleased to say he has been permanently expelled from Her stables.