One Sunday, the mom of Jay's youngest had come to pick him up. I heard that familiar sound, turned around and he was whizzing from the steps into the back yard. I firmly informed him that we do not do that here, esp. when there is a working bathroom inside. Jay backed me up, but Crackchild and her new husband let him pi$$ outside all the time..(no, she's not really a crackhead, just acts it sometimes...) I informed her they can let him do it if they want, but he is NOT to do that while at our home.
will add: when we are out and about, when the pottypanic sets in, we have been known to pull over if in the country and let him piddle on the roadside.