In a symphony of slurps and moans, the slave greedily sucks and licks every inch of her mistress's cock, relishing the challenge of a marathon blowjob contest. She expertly deepthroats, her mouth stretched wide, lubing up the shaft with her eager saliva. The mistress, overwhelmed with pleasure, guides her slave's head, fucking her mouth with abandon, until they both reach their explosive, satisfying climax.