mcneff 

Refers to a man with a huge penis and exceptional intelligence

That genius porn star is such a mcneff

mcneff by Ralph mouth February 8, 2018

McNeff effect

(noun)
muhk-NEF ih-FEKT /məknˈɛf ɪˈfɛkt/

1. When your own wrongdoing is exposed, but instead of owning it, you double down with lies, false accusations, and injustice- until the whole internet turns against you.

2. The phenomenon where bullying, silencing, and swatting the "little guy" into giving up their cause backfires and leads to loss of profits, tainting of the brand, screwing franchisees, and the ultimate demise of a company.

Instead of keeping the collection and silencing Ben, the mystery company unintentionally created the MCNeff effect, drawing millions of YouTube views and support to those that were wronged.

Franchise owner: Do you think that by doing the chicken dance the McNeff effect would disappear?
General public: No man, their response reached the point of no return when they attempted to kill Ben.

McNeff effect by Brick_by_Brick July 26, 2026

Mcnuffin 

When a mcdonalds worker gives you a mcmuffin but forgets to put anything on the inside resulting in just 2 tiny ass muffin buns

I couldn't satify my hunger need because that dumb mother fucker gave me a Mcnuffin

Mcnuffin by Tsidders June 28, 2009

McNifficent

When a person with Ginger (Champagne beige) hair does something particularly magnificent.

The cross came in and Ali hit it on the volley and scored a McNifficent goal!

McNifficent by Pam Burplen March 7, 2014

mcniff 

A true veteran in one's sport; usually in open competition. Typically part of the sport/game for thousands of hours and commonly referred to as an "open veteran".

Man, that player has been in competition for a long time. He is a true mcniff of the game.

mcniff by thisisthedoctorspeaking February 11, 2020

The McJeffrey 

To find the ugliest girl, that you will ever see and take a piss on her butt cheeks and then insert your penis into her ass.

That girl was so ugly I had to give her The McJeffrey.

The McJeffrey by Nascar October 1, 2014

Chubby McJefferson

A very clumsy fat person. Dresses in the "grunge" style, and wears skateboarding shoes. Has a multitude of wounds from all of the injuries caused by falling/tripping of the legs.

"Wha...Who...WHOOOOAAA!!!!!"
"Somebody call the ambulances, Chubby McJefferson's fucked himself up again"

Chubby McJefferson by Tyler "Tron" December 14, 2008