Here is a picture of a female urinal. Whoopee. No pun intended.
I'd try it! Last year at the Belmont Stakes they'd turned one of the men's rooms into a women's room, and it was like we discovered the secret to no lines at the men's room. It was the DOZENS of urinals lining the walls. Of course we couldn't use them, and I doubt most would, even with this new aid. But, anything to speed things up, I say.
Do a google I'm feeling lucky for [b]"shee pee"[/b] and look at the picture in the article.