The endless Bathroom

"I was in a huge building looking for a bathroom, but nobody could tell me where it was. I kept seeing signs pointing in different directions. One said "Bathroom," another said "Employees Only," and then one just had an arrow pointing at a wall. I finally found a door and went inside. There were no stalls, just a row of sinks in the middle of the room. People kept walking through as if it were a hallway. I tried to find somewhere private, but every door opened back into the same bathroom. At one point my old teacher was standing by the mirrors, washing her hands. She asked me if I had finished my homework. I said no, although I haven't been in school for years. Then the lights went out. I could hear water running somewhere, and someone was knocking on one of the doors. I tried to leave, but the exit had turned into a tiny cabinet. I climbed through it and ended up in my bedroom. There was a bathroom attached to it that I had never seen before. I opened the door, looked inside, and woke up before I could see what was in there."