As an avid Seahawks fan, I always think there's GOT to be those die-hards who implement the Seahawks into their daily lives, so let's take a look, shall we? First, the more common ways to know:
1. If their License-Plate says '12th Man'
2. Seahawks apparel
3. Seahawks flag outside their house
Now here's some more obscure things:
4. Navy Blue car
5. Navy blue house
6. their dog's name is 'Tez'
7. Their favorite food is Pork Chops
8. they spent $250,000 on a luxury seat in Super Bowl XL
9. they have Qwest as their Phone/Internet provider
10. They have a pet osprey
keep an eye out, you just might find them.