The first time I saw an advert for an electro-stim sex toy, I was agog. I mean, why on earth would you want to attach something to the mains and then insert it into your own body? ‘There’s masochism and then there’s your basic insanity’, is what I mostly thought. Over time I spoke to more and more people who owned and used such devices on a regular basis and realised that if all these down to earth, normal folk were enjoying being zapped then it couldn’t be such a bad idea after all. I still didn’t fancy trying it myself, though. But then I was sent a Mystim Tickling Truman vibrator to try out.