You obey and control yourself.

It takes all your strength and concentration, but you manage to control yourself and do what the girl says. While her hand continues to stroke your throbbing cock slowly and you can feel her presence right behind you, you focus on licking the other girl, pushing your tongue into her pussy or circling her clit with the tip of your tongue. You hear Trisha moaning and sighing, and she starts to steady herself by grabbing the balustrade with both her hands.

"Nice, big boy, very nice", her sister whispers into your ear. "You are really useful! My sister is enjoying your little tongue play."

Her hand still strokes you slowly. You feel your cock twitch.

"Ah! Ah! Don't cum! Not yet! Be a good, obedient dog! Lick your mistress first! You have to earn yourself your little orgasm. Understood?"

Her hand vanishes and you let out a moan of frustration. Your cock is throbbing and pulsating, it feels ripe to burst, but you feel yourself tamed both by her words and her gesture. "If you make my sister cum, I'll let you blow your load", the voice whispers into your ear, and then adds: "Maybe." Followed by another giggle. "You really need to learn how to edge properly, big boy. Silly boy."

The pain in your hard and aroused cock is excruciating, but you manage to stay focused, and continue to lick. Your lips, your mouth, your chin is soon soiled with juices, as you continue in your quest to make Trisha orgasm. Finally, you feel her spasm, her thighs tightening, grabbing your face like a vice, pressing her pussy hard against your face, your nose, your mouth. For a moment, you wonder if she might suffocate you. You hear the blood pumping in your body, you feel your cock throbbing, and all this distracts you from actually hearing Trisha orgasm.

Then she releases you. Pats you once more on your head like a dog, blows you a kiss, and walks away.

You look around for her sister, confused. The feeling intensifies as you can't see her anywhere. With a shock you realize that both girls are gone! The one behind you must have left quite a while ago - and she took all your clothes! All you have are your shoes.

You stand there, with your throbbing cock, your face covered in juices and drool, naked, humiliated and disoriented. And it takes even more time until it dawns on you that with all your clothes the twins also took all your coins! You are not only naked, but totally broke. The twins have played you like... like... a stupid dog in heat.