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

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

Fort McNewfie

The town of Fort McMurray. Named McNewfie because it has been overrun with the genectically challenged migrant workers from the Easter province of Newfoundland.

This fucking town isn't even part of Alberta anymore look at all the goddamn Newfies. Better sign up for a labotomy if were gonna stay. They should rename it Fort McNewfie!

Fort McNewfie by Electrical Genius November 14, 2010