This sound comes from Gorebox, a physics sandbox game built around ragdoll violence, weapons and destructible characters. Players record clips of limbs being blown off during chaotic experiments, and short effects like this one were ripped and shared on soundboards for reuse outside the game. Its popularity comes from how specific it is, a dedicated limb burst rather than a generic explosion, making it instantly recognisable to Gorebox players. Editors keep using it for mods, machinima and meme edits where that exact splatter hit is needed.