Neefed It Up 

To mess up or cause a failure, this term was popularised by the YouTube Channel Oliver Aged 24 (HowToDrawReallyGood ) where Neef (a previous student of his) would show some of his pieces of work that he created using the tutorial, they are always terrible and referred to as being 'Neefed up'.

"You have Neefed it up"
"You've really Neefed this up!"

Neefed It Up by JoeAged13 June 1, 2013

Neefer 

neefer (neef, nef, or nefer) is a word that can be used at any time, anyplace, and have any meaning you would like. it can be a noun, verb, adjective, adverb, etc. its basically the neeferest word ever.

"oh my gosh, you're such a neef! i cannot believe you would do that!" or "wow, that's the neeferest thing i've ever heard you say; so inspiring" or "go nef a neef you neefer!"

Neefer by Mara Serpa May 19, 2008

Neefed 

1.The art of changing someone's facebook or myspace status to an out of date song lyric to make them look foolish and out of touch socially.
2. Being utterly creepy and getting domed up by heavy set women while trying to maintain the image of liking more attractive girls.

1. Dude, i left my face book open and totally got neefed. He changed my status to some lyrics from forgot about dre.

2. He took home a girl that's a thrower on the track team. She had to weigh at least 225 pounds. He totally neefed out last night.

Neefed by bigpuke/london October 20, 2009

Nefew

Super intelligent new interns at multi-million dollar companies. Potential full timers are often jealous of their grasp, reach and intellect.

I am afraid that the nefew at AMZ Company will replace me soon! (here I can be SDE L4 - L8)

Nefew by amzint October 5, 2022

Neffew 

pronounced nef-yoo
noun
1.
a son of one's brother or sister.
2.
a son of one's spouse's brother or sister.

A Tunis court has convicted a neffew of the wife of Tunisia’s former president for writing more than €300 million ($399 million) in bad checks and sentenced him to 18 years in prison.

Neffew by Nyghtsong November 29, 2011

Neefed 

A high you get off of nicotine.

Guy 1: Dude I was vaping yesterday and I got Neefed to a new level...
Guy 2: You're a fag...

Neefed by jonnyboi206 December 24, 2016

Nefew

Upcoming interns (who are very intelligent) to FAANG+ Companies. Often boomers are jealous of these people as they are extremely smart and can pave their way up the corporate ladder quicker than the boomers.

Look, there's the nefew at Amazon, I am scared they might replace me soon!

Nefew by amzint October 5, 2022