Have French Fry Boxes Always Had a Secret Spot For Ketchup?

This is one of those "life hacks" that we've either all been missing out on for years or is completely full of crap.

A Twitter account stirred up the masses when it posted that the cardboard flap on the top of the French fry box has a functional purpose. Supposedly you fold it back and use it as a place to put your ketchup.

I'm calling shenanigans on this. Being the fast food aficionado that I am, I wanted to put this to the test. Klinger eventually found a McDonald's that would make us some fries early in the morning.

Here's a side-by-side of the French fry box before and after it's folded. Seems more like a "hack" than it's intended purpose:

Seems doable, but that's also an empty box. This is what it's like when you try folding the box with fries stuff in it: