Why oh why?

I just came back from the grocery store and while I was waiting in line I noticed that Abe (who was sitting in his stroller) was picking at something on the wall part that's underneath where you put the groceries (I know, good description). Anyway, I thought he was just picking at the black rubber and I pretended not to notice because he was quiet and that's all that really matters to me. A minute or two later I noticed chewed up gum in his hand and gasped. The lady in front of me told me it was in his mouth, too. I wanted to cry and where are my antibacterial wipes!?!? The really gross part is that this gum came from the kind of person who sticks his chewed up gum underneath the black rubbery part of the wall underneath where you put your groceries! Who does that? I know it could have been worse, but that was tramatic enough for me!