In this extreme femdom encounter, a mistress takes her submissive's devotion to new, painful heights. She carefully injects saline into his balls, watching them grow and stretch under her skilled hands. The sub, bound and helpless, whimpers as his flesh is pushed beyond its usual boundaries. The mistress, loving his torment, teases his engorged sack before forcefully fisting him, her entire hand disappearing into his swollen scrotum, leaving him gasping and begging for more.