She's so used to submitting, sucking and slurping on cocks and balls... but on this occasion MistressMD and GoddessAveena decide they are going to teach her a little womanly power, with a bit of ball busting. Here we have (presented and captured by GoddessAveena) a BBC with a lovely set of jubbly fat balls for slavegirl to practice on... Tune in to find out how good the Mistresses teaching skills are...