un tease italiano sarebbe bello

not personally keen on the spiked ring - i'm not into pain. But the idea of using plastic bottles of two different sizes could be good for a prototype of the original idea. And you could put plastic tape along the cut edges so as to make them smooth and not sharp.

Idea for a keyless chastity device.

"Look," she says, "it's just a toy; there are no keys, so you can take it off when you like."
So she convinces him to put the toy on his flaccid penis. Then she throws off her gown to reveal her sexy underwear, and starts to provoke and tease him. He soon gets ...