It's faux activism, try to look like a protester but don't have the slightest clue of what should be the cause. The Pepsivism Manifesto can be found in the commercial run by Kendall Jenner.
- Hey, does Pete became a militant?
- Nah, don't worry, that's Pepsivism.
(origin: a combination of the words "Pepsi", a brand of cola drink, and "popsicle" which is a frozen treat made up of juice being frozen with a wooden stick frozen in the mold to avoid sticky fingers when licking it. )
If you want something cold and sweet, but not tangy, try a Pepsicle instead of a juice popsicle.