How to get the secret lemon demon boss in Friday Night Funkin'Sour fruit demon Friday Night Funkin' is a combination of zesty flavors and enchanting rhythm. When life gives you citrus fruits, embrace their sourness and turn them into a tasty beverage or flavorful ingredient in your favorite recipes. The heart for demon in fnf is undeniable, with its addictive beats and testing gameplay. Join the fun, embrace the juicy heart of lemon, and conquer the sinister challenges of hit indie game.