Our mind is blown! Like Scanners blown. If you’ve never seen it, Google it.

McDonald’s is upping the burger game by giving away 10,000 bottles of the Big Mac special sauce for FREE on Thursday in select McDonald’s restaurants nationwide.

The burger giant has introduced the Big Mac Special Sauce Finder iMessage app that locates the closest chain to you that’s giving it away. Once you get to the location, you have to share the secret code — “There’s a Big Mac for that” — for a chance to snag your very own. Quantities vary per location.

The move is to celebrate the introduction of the Mac Jr. and the Grand Mac, two different-sized variations of the classic sandwich.

McDonald’s introduced the Big Mac in 1968. In 1975, the special sauce got its own song in the signature Big Mac commercial, touting the burger’s ingredients: “Two all-beef patties, special sauce, lettuce, cheese, pickles, onions on a sesame seed bun.” You know you just sang along in your head!

This is not helping us prepare for bikini season.