Boy or Girl

Well, I have to confess to being dumb and blind. At my school we have two teacher restrooms. They both have a huge sign that says "TEACHERS, STAFF, AND VISITORS ONLY" I took that to mean me. Well it is, but I failed to look at the pictures of person with pants or person with skirt. Everyone picks their favorite stall, so since these were one holers, I picked my favorite one. There is not a urinal in either. I picked the one with the person with the pants. I did not use this restroom once or twice, but daily for 12 weeks. I finally discovered my mistake because another teacher brought up using the male's restroom. I was thinking, "There's a male's restroom?" Sure enough, there is. The symbol is the same size as the sign with words, so I have no idea how I missed it. Now, some daily thoughts make sense...."Why is the lid always up? I must come in after the janitor everyday." "Why is there no small trashcan next to the toilet?" and "Why do all the students look at me funny when I leave the restroom? We all do it." Now, I know the answers to those questions. MENS RESTROOM!