This I found very useful in tumblr. Thanks blindjaw for posten!

Here a well ilustrated guide:

How to Clean Your Ass - 02

How to Clean Your Ass - 03

How to Clean Your Ass - 04

How to Clean Your Ass - 05

How to Clean Your Ass - 06

How to Clean Your Ass - 07

Originally posted on https://howtocleanyourass.wordpress.com/