Stories - Respecting Own Space /body

[Guest]

Anyone know any good stories/social stories about respecting own body , keeping personal things private. Its not a huge issue but we have a few children who keep going into the toilet cubicles together and they like to 'compare'their bits and pieces. All very natural curiosity and we have had chats about what 'private' is and what it means in respect of personal space. We would just like to approach it from another perspective and wonder if anyone knows any good stories/books which would be suitable ???? Dizz