Credentials for what really makes a "really big Tool fan":
1. You have to be a complete fucking asshat who only listens to maybe five bands at most
2. You worship the very ground Tool walks on, while you praise every sound byte like it's cum from heaven.
3. You believe that listening to Tool makes you smarter than people who don't
4. You offer the most pretentious explanations for your obsessive, cultish fascination with the band.
5. You feel like you're clued in to some underground and very complicated artistic wonder, even though the album is going to almost go platinum in it's first week of sales.