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9.
Massive Assault of Content, as a verbal attack.

Noun/verb, depending on usage.

To attack one verbally with a massive assault of content that is impossibly detailed and long, with little to no provocation initiating the attack and a varying degree of relation to the initial prompt, if any. The attack will range from rambling to erudite, depending on conditions. It finds its origins in Olde English, of the carpet-bagger era, which was a system of puppet-government set up to govern colonies in the late nineteenth century. Nearly identical to at least 2 definitions of the term Matt Damon
"Brah, that definition was such a MAC-Attack"
by Mr. Notberry February 15, 2010
 
1.
The act of consuming considerable amounts of liquor and launching ones self onto a unsuspecting person to make out with them usually in front of a large crowd.

Slangs: Macked, Mac all night, Ronnie macked
"Yo man! catch that guy Mac attacking those chicks!"
"Bro, hes pretty much my hero"
by Lemi545 December 02, 2009
 
2.
A Mac Attack is the art of getting half a dozen or more cups of (free) water from MacDonalds and going into a car at nightime with a group of friends and throwing the cups at unsuspecting people with the objective of it hitting them and soaking them in MacDonalds tap water with perhaps a few ice cubes.

A much cheaper modo-alternative to the traditional egging.
Laurence - Yo Conway you keen to do something tonight?

Conway - What you got planned?

Laurence - A Mac Attack what else

Conway - Count me and the boyz in bro'
by The OG Mac Attacker January 25, 2011
 
3.
A sudden urge to eat a McDonald's Big Mac. Satisfying too many mac attacks leads to diabetes. And the fatness.
I feel a mac attack coming on.

That fatass looks like he's had one too many mac attacks.
by mcfakey March 02, 2006
 
4.
To succumb to death from complications from pneumonia, in conjunction with an immune system disease called sarcoidosis.
guy 1: Yo, where's Reggi?

guy 2: His sarcoidosis was acting up and he got pneumonia.

guy 1: Oh man, he had a Mac Attack
by Luviticus August 13, 2008
 
5.
Sudden urge to eat food from McDonald's.
"I'm having a serious Mac-attack; could you spare me a dollar so I can get some fries?"
by Exiled Josh September 07, 2005
 
6.
The compulsive consumption of 3 or more McDonalds Big Macs in one sitting.
1. I had a Macattack on the way home after the football game.

2. We went to McDonalds and Nick had a total Macattack.
by Jack Bauer. November 24, 2009
 
7.
A mac attack is when you've eaten any regular meal at a MacDonalds restaurant. And when that meal is fully digested, ofcourse you've got to go to the toilet. Your toilet's sanitary will be severely compromised after that.
'Man I feel really really crappy after eating all that Macdonnalds food, better do a Mac Attack on the toilet'
by StbbiP May 06, 2009