Yet no matter your take on "Dystopia (The Earth Is on Fire)", the song's hook is most definitely NOT a take on Bloodhound Gang's "Fire Water Burn." Sorry, dudes.
"The Roof Is on Fire" dates back to Rock Master Scott & the Dynamic Three in the mid-'80s, and much like any variation of "hands in the air, waving like you just don't care" it has been used countless times since then. Yes, even before those music pioneers in the Bloodhound Gang. It's been used on Bratmobile's "Poloroid Baby," Rancid's "Burn," R.Kelly's "Home Alone" (out in 1998, the same year as "Fire Water Burn"), Bizzy Bone's "(The Roof Is) On Fire" (also out in '98), and tons more songs since that time. More importantly, the term is used in a pivotal scene in the movie House Party.