After camping 60+ years, finally ran into the ultimate ....

Only problem I have ever had at a dump station was at an Oklahoma rest area. (Yes Oklahoma has RV dump stations at a lot of their rest areas). A trailer was sitting at the dump station with his water hose attached to the outlet and the slides out. After waiting about 30 minutes I walked up and ask how much longer he would be. He said his kids had finished their shower and his wife was in now so it should not be much longer.. What?????? I just walked away. I could not think of a response to that one.