Licking
I find myself, sometimes, wondering when we lose the toddlerhood urge to lick everything. My daughter is 1, and it seems to be a rule that everything needs to be checked out with her tongue. This is the same for food, toys, random blobs of dirt she finds on the street or people.
Someone living near this sign has not ditched the urge, and now the management feels the need to enforce a non-licking policy. Another situation where you’d think it went without saying, but obviously needs to be said.