June 12 is National Peanut Butter Cookie Day.

According to the holiday site Punchbowl, peanut butter cookies became an American favorite in the early 1900s: “In 1916, George Washington Carver began promoting the peanut and its many uses. As part of the campaign, he published three peanut butter cookie recipes in a research bulletin entitled, “How to Grow the Peanut and 105 Ways of Preparing it for Human Consumption.’”

A popular variation is the peanut butter sandwich cookie, which seems to be the favorite cookie of the colorful character in this 1970s Nutter Butter commercial. That’s why he dresses up like a cookie and hangs around the playground, singing cookie riddles to the kids, hoping one of them will give him a peanut butter sandwich cookie. Also, he’s probably deranged. And this is why today’s parents don’t allow their children to go to the park unaccompanied.

Nabisco Nutter Butter cookie commercial, 1970s

So, on National Peanut Butter Cookie Day, “Have another Nutter Butter peanut butter sandwich cookie!” And tell your kids not to talk to crazy people on the playground.