That's Some Bad Accident!!

Last week, just before I hit the road to take the kids to school, I saw a report that there was a bad accident on the highway, and that people were getting off and cutting through North Andover.  As we turned onto Mass Ave, the traffic was at a standstill, so I assumed we'd be there for awhile.  I said to Zachary, "Hey buddy, we might be late for school this morning."
He replied, "Why?"
I said, "Because there was an accident on the highway, so people have gotten off and are cutting through town, which is slowing us down."
Zach said thoughtfully, "Oh...cuz someone peed?"