We have friends who live down the street from us. We enjoy their company and they have two boys similar in age to ours. The problem is when their kid uses our toilets.
Since owning our house for 10 years, our family has plugged the toilets exactly zero times. Their oldest son is 8 years old, has plugged our toilets twice - one time in two different toilets. The first time we had to plunge away for a good 30 minutes. The second time there was a mound of toilet paper we had to scoop out.
Today, they are over and he asked to use the bathroom. I was cringing while I gave him permission. He is still in there as I type this and I nervously await the horrors to come.
At least my wife no longer questions the expense of a porta-potty rental during our annual 4th of July party lol