because I don't mind if you laugh at me.

I went into the suburbs yesterday to run some errands. I stopped at the mall for some lunch and to use the washroom. I have been to this mall several times and the washrooms are at the end of a long hallway, the mall was quiet and I obsereved a gentelman and his son coming out of the door in  front of me, I walked past them and into the next door, basing my choice on the man and his son and the door they came out. As I was washing my hands I noticed a gentleman coming through the door, then I looked in the mirror and realised I was in the men's room! - I smiled at the man and left. But if I was in the men's room then the man and his son were in ladies room, I guess it was a good thing the mall was not crowded because we all would of had some explaining to do.