Imagine she doesnt have a weee wee and is just taking the piss outta them, wanting to see how they react, or just want to stare at close by little richards.
And then you ask her out on a date. Only a girl that was found in a men's bathroom would say yes to such a question from you. Elated you've found someone so edgy and fearless, someone who will go into the bathroom of the opposite gender, you scream in joy and already picture in your kind the future of the two of you.
Then you invite her over for Netflix and chill after the date goes not horribly. You neglected to notice she ate more than you. You neglected to notice an Adam's apple as "she" was destroying a rack of lamb with her huge teeth. You neglected to notice you guys went to the same bathroom again.
But you didn't neglect to notice the bulge in "her" pants when you were laying on your sofa making out. Yet you still continued.