Play the innocent boy

You pretend not to have noticed that his eyes are now looking at your lips, not to notice the slight smile on his face, or the clearly appearing buldge in his pants. His jeans are incredibly tight and his legs are like two trunks. You can't help but thinking about them blocking yours, keeping them broadly open for... You got to think about something else, not give yourself away. You look elsewhere, a bit embarrassed, asking him for strict convenience if he needs any help. Hoping he'll say no and let you hide in your bedroom for ever and ever. Unfortunately, he does not. "Actually, miss, you could help me with something..." he replies. Gosh.

Blushing, you ask him what you can do for him. "Well, you see, I'd need you to hold this," he says giving you some weird instrument you don't know what it's for, "very stable just right here", he says, showing you the place. You do as he asks, having to bend over quite extensively to be in the adequate position. "Nice, don't move". You hear him moving some parts and assembling something behind your back. He has put you against the wall, so all you see is it, as well as a part of the window. With his weird bar-shaped instrument in the hands, you lie on the wall, legs apart for stability and comfort, and a little bit arched. Your top has fallen a bit higher and your butt is practically uncovered, save for your very, very, very small thong. You feel its string with a particularly intense acuity, as you feel every draft on your butt, as a caress. He does not come back right away, but after two or three minutes, but you are sure that his eyes are right on your ass.

He comes back to you after minutes, putting himself conveniently right behind you, not touching you, but almost. He's not in his home, so he treads lightly, but what he wants is pretty clear. You could technically tell him to fuck off, but you'd rather play on your ingenuity. He starts using your mesurement as a basis to install the complex ice-dispensing machine you're having installed. He gets closer, then further away from you, always behind you, until he's almost done. You are in a hell of a state, blushing and catching your breath and not knowing what you want. "Mind if I let you screw that last one, miss?", he asks softly. "Ye..." you stutter, "Yes of cou... of course...". He slides a screwdriver in your hand, and you start working on it. He's not gone. His hands are, casually, on your hips. He hesitated at first, but you do not react. He pets you gently, as you screw.

Very casually, he says "Now... shall we talk about my payment?". His hand is in your thong.