flamefetti Share definition Flag A result of the fourth of july, usually composed of half-charred sticks, wrappers, flash paper, and burnt out bottle rockets. Jesus Mike, there's even flamefetti in the toaster. How's something like that happen? flamefetti by Frostatine July 5, 2008 0 0 Get merch Get the flamefetti mug. Buy Now — $32.95 See more merch