Honigkuchenpferd

You can buy and eat one at the fair or the Christmas market -- a rocking-horse-shaped gingerbread cookie (Honigkuchenpferd). But they're most often used to describe precisely what real rocking-horses generally don't have, but what is usually frosted on the edible variety -- a big smile. However, if you like frosted gingerbread cookies, you're likely to smile like a "Honigkuchenpferd" when you eat one.