It's obvious these dads, and the children, are having a rough go of it. Anyone would if they had to change their child's diaper in a bathroom without a changing table. It's assumed that the mom would usually have diaper duty when the family goes out to eat, since they have the changing tables. But dads are there too. And at least these two bathrooms have no place to lay a child down. You certainly can't lay them on the floor, so the next best place would be the lap.