Tonight's dinner table conversation

So today we had our septic tank pumped. Max was fascinated by the great big truck in our driveway, and the whole process - we talked about the plumbing in the house and pipes under the ground and where things go, etc. At dinner, he often likes to share the happenings of his day with Daddy...

Max: "Guess what, Dad?"

Dad: "What?"

Max (very excitedly): "We saw a POOP TRUCK today!"