LOL! My dad would NEVER! It would hurt his pride too much
I never understood why people are so weird about sharing the same bathroom with the opposite sex. Many places in Europe do this and my freshmen year at college there was only one bathroom on the floors. The floors were single sexed, but guys who visited the floors often used the bathrooms. I'd often get out of the shower and see a guy washing his hands LOL. It never bothered me a bit!
I've had to dash into the mens room myself once or twice, when the line for the womens restroom is like round the dang block! What on EARTH takes women so dang long in there?