Have a nice lunch with your wife.

“I’m thinking of doing something very naughty right now,” you say to your wife, as you slacken your hold on the belt. You start to pull Gemma back and forth, sliding her up and down your cock as you take a bite of your sandwich. “I’m thinking of skipping work for the rest of the day and taking my wife to the movies.”

“Oh that sounds lovely,” smiles Rebecca. “I've been wanting to see that film about the girl who sails around the world solo, played by that young British actress I can never remember the name of.”

Each tug of Gemma‘s makeshift leash is slow and deliberate, drawing her down the length of your shaft with excruciating exactness. As her mouth sweeps over the surface of your shaft, thick masses of spit begin building up around her lips, dripping onto the chair in the gap between your legs. It doesn’t take too long for the rush of cum to start bursting out of your cock and into her waiting throat. It’s not the biggest load you’ve ever blown - after all, she’s been servicing your cock all morning, and you’re drawing from your reserves at this point - but your body still tingles with pleasure all the same. You feel her throat working against the head of your dick, swallowing your seed and sucking the last of it out of your shaft until you’re finally empty.

“Well wasn’t that a delicious meal?” you say to your wife, at the same time patting Gemma on the cheek as you hold her down on your cock. “Let me finish up something quickly and we’ll head off to the movies soon, okay?”

Rebecca leaves your office, taking the empty plates with her. You get up from your desk and do up your pants, then kneel down by the desk so you can look Gemma in the face. Without saying a word, you tie her leash to the leg of the desk and give her a kiss on the forehead, before getting up and walking out of the office, closing the door behind you.