Total Obedience
"Look at those silly cock twitches over there. Hmm, maybe i'll let you jerk until you pass out this time, what do you say slave?"
(As you keep on stroking your desire grows more and more and you try to let mistress Stella know about your predicament)
"What's the matter slave, trying to say something?"
(You nod your head)
"You look a little tense over there, not yet, just a little bit longer slave, show your mistress some endurance. Unfortunately you have to xzibit some exceptionally good orgasm control from here on out slave because I like slaves who can really pound their meat for a really long time. C'mon, twist and squeeze your nipples while you stroke, make it hurt a little!"
(You try to plead with her)
"That bad already, huh?. Sorry, but you have to work for it slave.."