Did I mention I forgot to flush the toilet in a common bathroom of 100 girls?
Do you really forget or was it on purpose?
I figured shortly nobody needs to use it.
Have some common courtesy. No one wants to deal with someone else's crap--literally in this case. Flush the toilet when using it.
I should be punished for it.
I don't know about punished, but certainly admonished. If there are that many people there, you know they're going to be using it.