Ken and Mari are married couple. One day, they went to the park near their house for walk as usual. When they walking around the park, Mari has said she wants to go to the rest room and went to the public toilet near there. A few minutes later, she came back with distorted face. She said that one woman has been relive herself with throw opened the door. Actually, She was Chinese. In china, It is usual that they don't set up the doors in toilet. You can see the non-door toilet easily if you go to china. so, they do not ashamed to open the door in toilet.
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