numnick 

A numnick is an integer encoded in a format similar to Base64. This encoding is used in IRCu Protocol 10 (P10) inter-server communications. The encoding uses characters from the set of upper and lower case English letters (a-z), digits zero (0) through nine (9), and the open () and close () square brackets.

HOWEVER, I use it as an Anglicised version of the Yiddish Nudnick, meaning a pest, a bore, sometimes used as a term of endearment. If you read the official definition above it translates to an anorack or nurd.

When someone is boring you with their exploits as a train-spotter or fisherman or their grandchildren, they are a numnick.

When your child/partner does something silly or endearing, with great affection you say "You are a numnick, but I love you".

numnick by Johell September 5, 2008

Nutnick 

A scab on one's ball sack resulting from
a razor cut while shaving

She says to him "what is this" he states "c'mon baby, it's just a nutnick"
Most likely isn't true, but it sells

Nutnick by tinkerslink December 9, 2008

Russian Nutnick 

A Russian Nutnick occurs when you hurry through manscaping your nutsack.

I was rushing through trimming my ball pubes when I gave myself the Russian Nutnick.

Russian Nutnick by Minksie February 17, 2010

nudnick 

Someone who is boring or annoying

My grandma is such a nudnick.
That fatass is such a nudnick.

nudnick by Sid_V October 14, 2005