"Normal" people have five senses right? When one lose a sense and the remaining senses are heightened (not sure if it's right word). For example, me - I'm deaf as pole as y'all know, i go to the toilets and do my business and when it's time to wipe, I go by feeling between my butts with toilet paper of course. Also you can judge by looks if you're flexible like pole dancers - that being said I'm sure they don't do that way. Or you could heed Birds advice and do 15 wipe system. Please try these and report back I'm sure we all would love to know.