mcmac 

A mcmac is the sexual action of filling a womans vagina with big mac secret sauce then eating it out, therefore bypassing the unbearable fishy taste associated with a vagina.

We went to Mcdonalds and ordered 5 big macs, scraped off all the secret sauce and i mcmaced her all night

mcmac by mcdsworkerr November 17, 2010

mcmac 

The most delicious and fattening of all McDonald's products. It can only be ordered from their secret menu, to access this secret menu you must punch a cashier in the face while shouting McMAC!! repeatedly. If the cashier is still alive, he must then (company rules) proceed to give you a McMac.

Cashier: Sir may i take your order?
Customer: why yes could i have a MCMAC MCMAC MCMAC!
Cashier: OMG WHY WOULD YOU PUN...
Customer: *jumps over register and continues punching Cashier*
Cashier: ok ok, here's your mcmac

mcmac by Dextrine December 25, 2007

Andrew McMahon

Singer/songwriter/pianist of Something Corporate, and side project Jack’s Mannequin. Truly a musical genius, who amazingly incorporates piano(barefoot :)into rock music. His voice is full of emotion, although his appearance is known to be a little nerdy...but totally hot. Andrew has been diagnosed with Acute Lymphatic Leukemia,is being treated in Los Angeles and his doctors expect a full recovery. GET BETTER! <3

Get better Andrew McMahon!

Andrew McMahon by Freya_x November 14, 2005

McMansion

A large and pretentious house, typically
of shoddy construction, typical of "upscale" suburban developments in the late
20th and early 21st centuries. Such houses
are characterized by steep roofs of complex design, theatrical entrances, lack of stylistic integrity and backsides which are
notably less fussy than their fronts. They are often placed closely together to maximize the developer's profits and appeal to people who value perceived social status over actual, physical, economic or historic value.

Although Nancy is just a school teacher,
she mortgaged herself up to her neck to
buy a new McMansion on Woodbridge Road Court in Clayton Hills Valley Estates at North Pine River Hollow Meadows.

McMansion by Cireel Wittsberg November 15, 2004

mr. mcmahon walk 

Derived from Vince McMahon, WWE CEO, to flail one's arms and legs while grunting anytime you are on vacation or having a guys night out.

He's doing the Mr. McMahon walk!
This night's about to get really cool!

mr. mcmahon walk by #1ABF December 8, 2014

McMansion Trash 

Very similar in behavior to trailer trash...An individual with the outside appearance of successful living (i.e. McMansion or large house, Mercedes in the driveway, trappings, etc)...yet in actuality, conducts his/her life like an animal in the zoo (i.e. heavy substance abuse, extramarital affairs, scandals, slumming, etc.)

Mr. Jones might look successful...but he's really McMANSION TRASH...

McMansion Trash by Graffilthier May 23, 2008

McMatics 

someone who is knowlegable enough of the McDonalds menu that they can perform complex, on the spot, calculations giving exact totals before the cashier.

Mcdonalds worker: "hi, what can i get for you today?"

Matt: "can i get a McChicken and a Big Mac Combo, supersized and 2 double cheeseburgers on the side with a small fry"

Dan: "dude, it's gonna be $16.78"

Mcdonalds worker: "that'll be $16.78 please drive up to the first window."

Matt: "holy fuck tits!"

Dan: "i know man, it's the McMatics!"

McMatics by angesuko March 25, 2010