A stern mistress teaches her new sissy the art of cocksucking. She commands, "You should know how to suck a cock if you're going to be a sissy." The sissy, eager to please, tentatively takes her cock between his lips, learning the rhythm and pressure as she guides his head. She spits in his mouth, humiliating him, but he swallows, hungry for her approval. She laughs, "Good girl," and continues his feminization training.