Another invention

"This is what we talked about last night, Sally. Another one of my inventions, the Omega Khirkscind-King." Stacy explained as she took out a strange device from the box. The device looked like a jockstrap, codpiece or belt, but with a large black box on the front and a big opening at the back. It had some sort of buckle at the sides that open and closed like a car seatbelt (but were locked with a remote control).

"What's it do?" I asked, which the three women giggled at.

"It's a masturbatory aid for men! A sex toy!" Debra blurted out.

"A guy wears it, honey, and--!" Svetlana smiled.

"--And then we activate it, and then it jerks you off!" Stacy interrupted, taking out a remote control with a screen display, which was how the device was manipulated.

"Give it a try, honey! You can be the first to test it!!" Svetlana goaded me, then all three women began laughing out.

I was already naked, so putting the device on was no problem. There was a hole in the front box where I slipped my balls and penis into, before the buckles were locked. Stacy explained that the device was completely waterproof (so I could wear it in the shower, cleaning it out at the same time), and with openings at the back and pumping tubes to expel penis liquids (so I could go to the toilet with the device on). She wanted me to wear it non-stop for about five days, to fully test its performance.

Once the device was covering my genitals completely from view and the straps were tight enough to avoid coming off, Stacy showed Svetlana how to activate the masturbation function. Crowded around the screen of the remote, grinning widely as Stacy pushed some buttons, the device on my pelvis roared to life and pleasurable sensations overcame my groin. There was some kind of internal air conditioning that bathed my dick in warm, and there were internal mechanisms giving me a wonderful handjob.

For ten minutes, I quivered on the bed in pleasure as the device worked me over, until I came with a howl and the device dutifully squirted out my load through its exhaust hole. Again, the three women laughed wildly as I recovered.