NSFW - This trivia is considered "Not Safe for Work" - Click to Reveal
In the game's Beta, Tier 15 of the battle pass features the rewards of Pajama Finn and the feline character Cake, both from the animated series Adventure Time. This is a possible euphemistic reference to the "Tier 15 of Dating" joke from the series episode "Burning Low" implying in-game that Tier 15 is bestiality, although it's never actually stated what Tier 15 is in the episode.
Contributed by PirateGoofy