Taco Bell is dead set on decoding Millennials and teens. As a part of their efforts, the brand’s execs study up on slang with a “Millennial Word of the Week” like “lit,” “throwing shade,” and of course “on fleek.” The vocab lessons are curated by employees in their 20s and are meant to help Taco Bell to understand their consumers. While we applaud the idea of keeping in-the-know, we would caution against using that Millennial slang too freely as a brand. (Chicago Tribune)