Ummm... actually it does sound like flint to me. But it could be the weed, because every now and then my weed will crackle and pop and shit. That usually happens when i spark the lighter up to close and flint flys on to the bow so when i light it, it sparks. I know its bad for the lungs so i dont do it on purpose. But if i do i like to watch it sparkle haha.