Just take a bit of a poo and then about half an hour and a shower later you should be good for it. but better yet, be with someone who is willing to accept the consquences of anal play. It can be messy, and there is nothing worse then getting into it to have the 'giver' shriek in horror "oh my god! stuff came out! EWWWWWW" oits part of the experience, and you caN always wash up afterwards. Infact you should ALWAYS wash afterwards