The only difference between women's and Men's bathrooms......urinals (right?).

I believe this to be true because it was the one signal that went through my brain to my feet that said...."not the right bathroom".

To help explain:

I was in this dark (very dark) casual bar, which was also very crowded at the time. I headed to the restroom as usual by weaving in and out of the people. Finally, made it to the hallway where the restrooms were located. Now, this was not the first time at the bar, but it also is not a regular place for me.