OK the neighbor boy is 9 years old and in 4th grade (I believe). He comes over and mostly plays with my 6 yr old. The boy has some issues although I am unsure what they are specifically. He noticeably has a speech articulation problem and his level of maturity is usually lower than my 6 yr old's. I notice when he comes over he uses the bathroom a lot. Like probably 2-4 times in a couple hours. He has peed in our yard which I have told him not to do. Today he was playing outside with Bug and I was sitting in my lawn chair. difficult child was inside playing with his friend and they had locked the front door. The boy was trying to open the door because he said he had to go to the bathroom. I told him I didn't have my keys and to go to his house (across the street and 2 houses over). Next thing I know difficult child and his friend are freaking out because they saw the boy defecating on the side of our house in the back yard! What on earth??! Not to he gross but the boys said it was HUGE. The boy's response after we found out was "well I had to go somewhere". What could be the reason for this? I was horrified!