I can piss off my wife at 20 paces.
Xavier- Porno-championships?
Uh…
I keen ability to look incredibly busy, right when a boss walks by. Enabling me to keep my job, despite my bosses constant whines of “I don’t understand why we are SO behind!!”
I can enter the 3 -digit channel for sky so fast that it looks like I have pressed one button to get the three numbers EVEN THOUGH sky’s number entering system is very sluggish and annoying.
I can also throw the sky tv remote spinning up into the air and catch it in the exact channel surfing posture with no adjustments.
I can surf all 200 or so interesting channels and find an advert on every single one.
I’ve got mundane. While eating a Twix candy bar, I gauge the bites to correspond with each hole on the surface of the cookie part of the candy bar. It doesn’t impress the adults too much, but the kiddies really think it’s swell. That’s probably the most mundane thing I doo in a cool (and consistent way).
I suppose that’s better than being able to piss on your wife at 20 paces.
(although the latter would be rather impressive… 
)
I can file taxes like a God on Earth.
Checking the mail couldn’t be more mundane for most people. But most people aren’t me.
I’m the only grown-up (or kid for that matter) in the nieghborhood who cruises down to the mail box every day on one of my skateboards.
I throw away garbage in a cooler fashion than any other person in the universe. I always lock onto the garbage can from at least ten feet away, swoop in with a dive-bomb pattern, and drop the payload - garbage - with a little flourish of my arm, a flick of my wrist, and the garbage goes twirling into the can like a long-bomb football pass.
Oh yeah, I can also unlock the door to my apartment building, open it, and remove the key all in one fluid motion using only one hand. Learned it when I was carting a million grocery bags up to my place. What’s even nerdier is that I think I’m unique for being able to do this.