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The M.A.C. System refers to a remarkably simple system that every male puts into effect at one time or another. The M.A.C. stands for:

M-Move in
A-After
C-Completion

In short, once one of your friends is done or broken up with a girl, you silently move in to support the girl in her time of dire need. Crushed and heartbroken, the girl will talk incessantly, but will eventually open up sexually. It can be noted that this system requires almost minimal effort and simply nodding and listening works, combined with a few hugs.

The M.A.C. System was made popular by Mac, a fictional character from It's Always Sunny in Philadelphia. His system is highly underrated and deserves as much attention as the D.E.N.N.I.S. System.
Example #1

Dennis: "What is this swooping in business?"

Mac: "Oh that's my system,The MAC: Move in After Completion. I wait til you're done with them and then I swoop in, give them a shoulder to cry on, then we hump."

Dennis: "You've been humping these girls after I'm done with them?"

Mac: "Oh yeah dude! I'm swimming in your wake."

Example #2

Robert: "Hey, Charlie, you get laid this weekend?"

Charlie: "Yeah, Mike broke up with Holly on Thursday so I used The M.A.C. System on her and we made sweet, passionate love."

Robert: "No kidding? Bump it."
by Brocker V December 7, 2009
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Can't Shit Anywhere But Home (C.S.A.B.H.) is a disease that plagues millions of Americans. It haunts our nation and there is really no cure. We just have to embrace that fact that some people cannot shit in public.
"Yo man, I have to go home and shit."

"Why dude? You can use my bathroom."

"No, I C.S.A.B.H."
by spiderman saves the day April 15, 2008
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Related Words
c.a.m.f c'ard-on C and E C and B C&A C’ani C and C C and E'r C as F [C-A-D]

A.C.T.S.

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Assume that every firearm is loaded.
Control the muzzle direction at all times.
Trigger finger must be kept off the trigger and out of the trigger guard.
See that the firearm is unloaded -P.R.O.V.E. it safe.
The vital four A.C.T.S. of firearms safety are Assume, Control ,Trigger and See.
by Inteligento September 5, 2007
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An acronym for Community Resources Against Street Hoodlums. It is a police squad unit originally created by the LAPD as a way to break the infrastructure of crime in the ghettos. It turns out leadership of these CRASH teams became corrupt, and even the most decorated officers were guilty of killing other cops, selling and using crack, and planting weapons and drugs in order to frame innocents. The origins of the CRASH lead back into the fifties, when J. Edgar Hoover ran the FBI, and as sneak attacks before dawn and after midnight would claim the lives of many black leaders, and eventually the Black Panthers and rappers like Tupac Shakur. CRASH disbanded officially circa 2001, but very similar units exist across the US in other departments.
Many CRASH cases are still unsolved, and the LAPD is imfamous for hiding any inciminating files.
It is suspected that the shooting and murder of Biggie Smalls in LA in 1997 was set up by a local CRASH unit with help from the LA bloods.
by Boricua February 7, 2005
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N-T-A-C

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Snooki is a N-T-A-C!
by MOCO & P-Phat October 21, 2011
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b.a.c.

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Bitches Are Crazy. 'nuff said

refer to the song by Lil Jon - Bitches Ain't Shit
#1 : fucking ho calls me at 7am, and asks to borrow money...
#2 : fuck that, b.a.c. yo
by turtleh January 25, 2005
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When a man defecates in the top tank of the toilet while receiving oral sex from someone pooping and sitting backwards on the seat.
"Hey girl, my dick is real hard and I noticed that we are both have been farting a lot. Perhaps we should A.C. Slater-Upper Decker Blumpkin"
by Juan Perico March 8, 2009
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