Yeah, this is a hobby of mine... A bit twisted I know. But it really is fun. It's quite possible to feel like you are having anal sex. The best thing is... this is safe sex... no partners... no disease... ick... when I get more time... I"ll put up some more info...
But for now... go check out Extreme Restraints they have all the electric sex toys you need to get started and then some! If you are already into this... check out the ErosTek ET-312.. now that is the cadillac of self simtulation with electrosex toys! And, it can drive any estim accessory with no problems!