What’s better than a Happy Meal with one toy? A Happy Meal with two toys, of course! This holiday season, McDonald’s is handing their customers double the fun—but it isn’t necessarily for the reason you’d think.

McDonald’s has a new toy in their Happy Meal that will give children not just one treat, but two. The fast food chain has had several coveted Happy Meal toys in the last few months. In September, children could collect mini Croc key chains.

McDonald's new Pet Simulator Happy Meal comes with a holiday-inspired sticker sheet and two toys — one of which is pre-wrapped and meant to be given away. Here's when they'll be available.

McDonald’s celebrates Christmas in style with a special collaboration of the Grinch as the star character of the Christmas Happy Meal

If you order a Happy Meal at McDonald’s soon, though, you may notice a difference: two toys. It may seem like a stroke of good luck or a mistake, but it’s neither. Here’s the story behind McDonald’s double toy Happy Meals.

The truth is, no one can really agree on who first invented the iconic McDonald's Happy Meal. Here's why the history behind it is so complicated.