Predicament coin against the wall

As you might know, I'm very well into challenges... I came across this website that is full of challenges for people to try. They're all a bit kinky of course, as I'm reading through the site I came along a task that was described as obedience training. So, you should place a coin against the wall, and hold it there for several minutes that they would decide. I immediately got an idea, which was to keep the coin against the wall for as long as possible, lol. Whenever I fail, I'll have to wear my chastity, but the tricky part of all this is that I'll be wearing nipple clamps, a vibrator & handcuffs on my back! Let's start the game...!