Jerk off in front of her face!

You pull your cock out of her mouth and begin to jerk it furiously in front of her face. She looks a little disappointed for a second but her eyes soon widen as something seems to click in her brain. Her eyes snap up from your cock to your face and then back down to your waist. She seems to regret getting so into sucking your dick and begins to back away from you.

"What am I........no, stop, I don't want....."

You move towards her, still jerking off like crazy, your climax still building towards its inevitable conclusion.

"No, please.......don't."

She continues to back away but is soon prevented from going any further by the metal wall. Her eyes fill with fear as she realises that she's cornered.

"Stop it, stop.....doing that!"

Her eyes are now fixed on your cock again and, although she continues to ask you to stop, you are sure you see a flicker of desire cross her face every now and then. You're very close now, the long months without release almost at an end. You just have time to aim.