Things not to do 'bating from experience

Okay, so recently I had a horny time that seemed like a good idea at the time. I was in the shower and I have a tube shaped scrubby that you're supposed to put a bar off soap in to scrub with. But, for crying out loud, it looks like a cock sock with a nice string that can be tightened around the balls. Horny enough and the soap made it feel good, but, man, shortly after the shower my cock head was a bit itchy, and it wasn't lunch before it was red and a little raw. Scrubbed a layer of skin off the head. I had to keep applying Polysporin to it for a week as it was so sensitive it was painful.

What other "don't try this" stories have your done?

 

One of my unusual and erotic ways to masturbate, is to tie my testicles with a thin rope and pull them down from behind and through my ass slit with my left hand while simultaneously sroke my cock up and down. The more I pull my testicles down, the more harder and thicker my cock until I finally ejaculate.