The bathroom Without doors

"I was looking for a bathroom in a building I didn't recognize. I finally found one, but it was huge and had rows of stalls with no doors. People were walking around like it was completely normal. I remember feeling embarrassed and trying to find a corner where nobody could see me. One stall looked empty, so I went inside. The floor was wet, and I didn't want to touch anything. Then I realized I had somehow left my shoes outside. I opened the door to get them, but the hallway was suddenly a supermarket. I walked around looking for my shoes while still needing to use the bathroom. A woman asked me what I was looking for, but I couldn't explain it. Somehow I ended up back in the bathroom, and now all the stalls had doors. I woke up before I could figure out what was happening. The strange part was that I still felt uncomfortable for a few minutes after waking, like I had really been in that dirty bathroom."