As a general principle, I do not believe in having two favorite teams, or having a "second favorite" team. It's part of my own personal worldview. Yours may differ.

But this Sunday, when the 49ers put on their throwbacks for their season finale against the Redskins, I might feel differently. Because not only will the throwback decor adorn the heads, torsos, and legs of the 49ers ... they're also going throwback with their upper lips.

They're all growing mustaches for the game.

It's the most beautiful damn thing I've ever heard. From SFGate.com:

"Most of us have been working on our mustaches," said Hill, who led the 49ers on two touchdown drives in the final seven minutes to beat the Rams. "I started four weeks ago. How bad is that?"

Hill said his offensive linemen instigated the 'staches in honor of their predecessors with an eye toward the throwback game in the finale.

"Every single day that we walk through here, you just can't help but admire John Ayers' mustache. It's awesome," Hill said.

You know what? John Ayers' mustache is awesome. And Shaun Hill's mustache will be awesome, too. Not necessarily because he has any superior ability to grow luscious lip fur, but because his heart is in the right place.

Honoring the mustachioed greats of yesteryear is a wonderful thing to do. This time of year, everyone knows it's the thought that counts. And the thought of a team coming together for such a beautiful common purpose is a Christmas miracle.

While you're honoring yesterday's heroes with the plain red jerseys, the flat gold pants and the mustaches, 49ers ... go ahead and do one more thing that the old 49ers used to do. Win.

Related: NFL Oddness