I used to have regular stains on my pants just above the knee. I assumed it was from lunches eaten carelessly at my desk. It was a little embarrassing, but I made sure to clean myself up and started putting a napkin in my lap.
Today I looked and noticed that the stains have moved. They are higher now. What?
And then it dawned on me; those are not lunch stains, and that they are getting higher because you two are getting taller.
So, thanks for all those moist hugs, kids. They are really impressing people at work.