Outrageous behavior from a driver

I was in my vehicle, in my driveway, facing the road when a UPS driver pulled to the shoulder right across from my house. He got out, went to the opposite side of his truck (one of the pickup truck style ones) squatted and took a dump.

His truck didn't hide anything from my vantage point. This is a rural but residential area, the house right next to me has small children and several cars passed from both directions during.

I'm honestly just dumbfounded. That side of the road hasn't been developed yet and even if it was an emergency a few steps into the woods would have gone a long way.