Eating Doritos could be your ticket to getting double XP in Call of Duty: Warzone and Call of Duty: Vanguard. Specially marked bags of Doritos are now appearing at retailers in the US, it seems, offering "dual XP" for both Warzone and Vanguard. The packaging states that purchasers get double XP and double weapon XP in both games, which share progression.

Presumably the double XP only applies for a set period of time, but we don't know the specifics at this stage. You can see what the special Doritos bags look like in the image below, as shared by Twitter user @Aeroenex6793 (via CharlieIntel), who apparently snapped the photo at a Walmart on the east coast of the US.

That such a promotion would exist is no big surprise, as Call of Duty has for years partnered with food and snack brands to offer double XP in this manner. It's not just Call of Duty, either, as Microsoft has a Halo Infinite deal with Kellogg's to give out double XP when you buy Pringles and Pop-Tarts.