10k 

Lantec's desk that cost him 10k to build on the Hard|OCP forums.

Did that (whatever) cost 10k?

10k by Pete July 24, 2003

10K 

Someone who wears a cheesy Mr. T starter kit.

Hey look, here comes Johnny 10K

10K by potro dobuc January 9, 2004

10k 

1. An internet forum member whose user ID is 10,000 or higher. This separates them from the established members and instead classifies them as a newfag. Other numbers can be selected (such as 20k, 30k, etc) but 10k is the most common cut-off.

2. An internet forum member whose user ID is within the range 10,000 to 10,999. This meaning can be applied to any number as well, but specifies exactly which thousand rather than a cut-off point.

This term only applies to members of forums that require registration.

stfu 10k

10k by Raptor007 January 20, 2009

10K 

A guy who doesn’t give one f*ck bout you burnt out jits.

10K doesn’t give a f*ck bout yo burnt a*s

10K by SteveMcEase November 23, 2021

10K Commotion

a website with an online comic about a fictional Dance Dance Revolution tournament that mostly appeals to Bemani geeks and people who go to anime cons. kinda based on a bunch of real tourneys and cons.

used as an adj. refers to the rules listed on the site, "perfects x 2 + greats + okays"

"The last DDR tourney at Otakon was 10K Commotion-style. Easier than calculating percentages for everybody on every song."

10K Commotion by second tuesday October 20, 2006

10k day 

One’s 10,000th day alive. This occurs when one is a little over 27 years’ old.

Me: Jack when are we celebrating your 10k day?
Jack: It’s already been and I didn’t celebrate it. I’m devastated!
Me: So sorry to hear. You only get one!

10k day by Festival Jez March 6, 2019

10k commotion

Quite possibly one of the nerdiest online comics ever, about two groups of angsty kids that train to win a DDR tourney.
Yes, they take a Dance Dance Revolution tournament that seriously.
Called a manga by some, despite the fact that it's american-made.

10k commotion is one of the nerdiest things I've ever seen. The main character has a backpack with fairy wings.

10k commotion by Oni-Unit July 3, 2005