Have done that before. Line of women at the lady's room door. No line at the men's room. Stalls were occupied. I was going to pee myself. Was not the first time people sas me half naked. Was not the last time either.
A gorgeous redhead friend of mine used to do this all the time, but she had to pinch her pussy lips with on hand in order to direct the flow... guess who would lick her fingers afterward!!!