Dirty Leg and First Grade Conferences

A few days ago, I went on a ride where it was 39-41 degrees, and it was a little damp. I had lots of splatter on my calf-sleeve-covered legs. When I got home and took off my calf sleeves, I had a pretty clear line on my legs where they were:

Dirty knee and pale clean skin.

Then, 2 days later, we had Henry's first-grade conferences. My wife posted this:

... and as a follow up, she posted these 2 photos with the caption "Really. Seriously. Totally my kid:"

My wife had more teeth, but my son has more ears.