McSpiff 

A form of digital-anal intercourse between men, where a finger is inserted deep enough in the rectum to put pressure on the prostate as an accompaniment to oral or manual sex.

Also sometimes called a "spiff" or a "McSpiffy."

He didn't seem to like the blowjob until I gave him a McSpiff. Now I remember to spiff him every time.

McSpiff by tannerstages August 3, 2010

Mcstiffy 

When ya have a hard on in the maccies drive through

"shit this maccies breakfast is giving me a mcstiffy

Mcstiffy by Liz bones October 16, 2018

McSpliff

1) to go to a Mcdonalds and purchase drugs (in most cases marijuana)

2) to go to mcdonalds for the purpose of buying a mcburger but blazing before so the food is much more enjoyable

3) to use mcdonalds washrooms to roll copious amounts of marijuana into small little spliffs

dude need weed nobodies round

get a McSpliff there always a guy munching out at mcdonalds

McSpliff by ANON-EH-MOUS February 16, 2010

McSniff 

Name given to one with the last name 'McNiff'

Guy: TAYlOR MCSNIFF!

Taylor: Stop calling me that!

McSniff by McSnivellus February 19, 2011

McSpiffy

someone over the top, crazy, sometimes totally stupid, and just plain spiffy

Wow, they're so mcspiffy

McSpiffy by Caitlyn Comintary November 15, 2007

mcspliffin 

Too Good at something; another word for mvp

You are soo mcspliffin when it comes to 2k!!

mcspliffin by Newworrdds December 29, 2017