Bullies make fun of your "stupid interest" no matter what that interest happens to be.
Always remember, you can never get more stupid than a bunch of grown men chasing a pigs bladder round a muddy field.
What? How dare you make fun of overpaid jocks that usually have to declare bankruptcy after their short career* because they suffered long term physical damage including brain damage from repeated minor concussions! Just remember to root for your favorite team that's your favorite because they have, like, the same team name and usually a very similar outfit over the span of 5 years or so even though all the people actually playing the game have changed. Just be thankful your taxes subsidize the tax-free NFL while also funding stadiums.
*Average 3.3 years.