put her mouth to use but challenge her.

"okay i want you to pay special attention to my cock with you mouth but your only allowed to used your tongue and i want you hand playing with your cunt at the same time can you manage that slut?" you question her " yes master i think ill manage" she obeys as she starts to slowly work her tongue all over your cock from base to tips slowly maintaining perfect eye contact whilst doing so. your in heaven Abby can certainly work a cock as she nearly sends you over the edge with her oral skills working away.

you reach down with one hand whilst shes at work on your cock and her cunt , feeling her giant tits squeezing them every time Abby hits just the right spot on your cock. Just before you ready to blow your load you make Abby suckle on the tip of your cock as she swirls her tongue around your cock head awaiting her master to done using her. You drain your balls into your slaves mouth making present your load on her tongue to you before she swallow it like a good pet she is.