I used to deliver packages to a family of four with multiple signs along sidewalk up to house warning everybody about to enter the “zone” around the house of any potential food allergens. The kicker was the final sign listing the multiple allergies of their two dogs. This was in the days before cell phones and cameras…

Witnessed a gal at CostCo gas pump lick her card a couple of times before putting it in the card reader. No one at work believed me and to be honest I was starting to question my own eyes. Not anymore after reading about these other "lickers". Thanks everyone!