Twin's Surprise, Part 2

Twin's Surprise, Part 2 by cactusman

As you kiss and slowly fuck her, she gets very excited, saying:

"Faster! Harder! Why are you going so slowly, slave?"

"Mistress, please! I can barely hold back; I'm so horny!" you confess. "If I fuck you any harder I'll cum for sure!"

"Oh, I see. I don't want you to have an orgasm, do I?"

"Right," you say and slowly pull out...