Twin's Surprise, Part 3

Twin's Surprise, Part 3 by cactusman

She lowers herself again and says:

"So tell me, are you three strokes away from an orgasm?"

"I... I don't know, m-mistress," you say. "I've never tried that before..."

"Let's see, shall we?" she says. "First stop stroking it!"

You stop your strokes.

"Now, give yourself three fast strokes, and let's see if you have an orgasm!"

You give three very fast strokes, but it leaves you on the edge, horny and panting...