This is from a witness perspective only. But i thought was kinda funny.

I was walking by the restroom in a very nice restraurant and noticed a lady trying to get into the female restroom. The door wouldnt move. Was it locked? The gentlemen that she was with said theres no one in the mens restroom. She proceeded to go into the mens. No biggie right? He stood guard like any good boyfriend/husband would do. I guess I might have a deevious side to me. Just leave and see what happens. Anyways, so shortly after she enters the guys, A lady leaves the womans restroom and followed by a guy. The guy posting guard obviously was a little irritated at this and stated quite loudly "OH NO WONDER NO ONE COULD GO INTO THE WOMANS RESTROOM" the couple quickly left area.

Now im all for getting it on in public places, its kinda fun mostly. But please have some respect for thy fellow peeing patron. Dont lock them out of the restroom.