nullock 

1. A stone that remains in one’s boot or shoe, despite unlacing, removing footwear, shaking out all unwanted contents, straightening socks, replacing said footwear, relacing and setting off one’s walk again.

2. as plural ‘nullocks’ the expletive used on discovering one’s footwear contains a nullock despite unlacing etc. Commonly heard on the shingle shores of the Suffolk coast.

Nullocks! That nullocking nullock is still in my nullocking boot.

nullock by science999 September 25, 2012

nutlock 

When you jizz, and don't clean up properly. After a while it dries and crusts up on your nuts.

Guy#1: Hey man, I was jerking it the other day and missed some on the clean up.

Guy#2: Ah, I hate when that happens.

Guy#1: Yeah, I had some serious nutlock later.

nutlock by JHE June 1, 2009

Nuzlocke Challenge 

An optional and more difficult way to play a pokemon game.
1. Catch the first Pokemon you encounter in each route/cave/whatever and nothing else. If you fail to catch it, too bad, continue onwards.
2. If your Pokemon faints, consider it dead and release it.
Additional/Optional rules include:
3. No use of healing items. You may only heal at pokemon centers.
4. If a pokemon that knows an HM move faints you may not use the HM. If no other pokemon you have can learn the HM you automatically lose and must start the game over.
5. Make a comic about anything significant that happens. You may be creative and turn it into a more original story.
6. Nickname everything you catch.
Grinding is allowed and any additional Pokemon that don't fit in the party may be stored in boxes. If all your Pokemon faint it's game over.

He tried the Nuzlocke challenge and had to release his starter after it was knocked out at the first gym.

Nuzlocke Challenge by Fish lemonade August 20, 2010

numlock 

repeating the same sequence of events without getting the expected desired results

repeatedly using the number pad for entering numbers when the numlock light is off OR if something is not plugged in unbeknownst to you, you keep hitting it thinking it's not working

numlock by Craque June 25, 2005

numlock 

1. The most useless key on a computer keyboard.

2. The most useless fucktard at any given moment.

"err, i think i just told your girlfriend about you and that chick last week."

"nice one, you fuckin numlock".

numlock by andy x September 17, 2009

NUMLOCK 

The key situated at the top left of the NUMPAD Like capslock and scroll lock, it makes lights flash if one presses it too much.

Alt codes require the numlock to be on.

NUMLOCK by Gumba Gumba April 8, 2004

NumLocker 

averse to studying mathematics

Most people are NumLockers

NumLocker by nebiru100 January 26, 2012