After a while she collects herself and says:
"Puhh, that was good, fuck, i really needed that. Oh..., i see you're still stroking slave. I almost forgot about you, sorry.."
"..."
"So, what do you say slave?"
"T..t.thank you mistress for letting me stroke mistress"
"That's what i like to hear, a obedient slave who is doing what he's told, without the slightest hope of getting some relief. I want you to slap your cock twice and keep stroking hard and fast!"
(You do as you're told)
"Tell me, who owns this fucking cock?"
"Y..y..you do mistress"
"That's right, well, is it getting frustrating yet?. Your dick is getting even stiffer as it seems and your big balls look so tight and full.."
"I..i..i'm very close mistress."