The secret to this Astros fan's epic 'stache awaits ...

Fine, we'll spare you the suspense: It's hairspray. And possibly a lifetime of watching Yosemite Sam cartoons.

Or maybe a subtle homage to Maj. Gen. Alpheus Williams' service at the Battle of Antietam.

Did we mention that he hands out these business cards?

Video: Ryan Cantrell / MLB.com Real-Time Correspondent