mack 

to mack a person is an unruley way of saying to kiss that person. Its informal register suggests the word's incongruity, however the word mack is an untouched goldmine. It can be used over supper conversations and not make a fiddle of sense to any old people.

"Can't I join your family?"
"No, you can't be part of our family. Then I won't be allowed to mack you."

mack by aro_hayden July 7, 2007

mack 

A term local to Portsmouth that means obviously 'dodgy' or suspicious.

That bloke's weed was mack as f**k, I wouldn't take it for free, let alone pay for it.

mack by buggeredjabba February 22, 2011

mack 

To bitch slap someone in the face

I'm Gunna mack you upside the head

mack by mctits April 24, 2003

mack 

to be mack is to say anything that comes to your mind

your the mackiest mack of them all

mack by adam meyers October 16, 2006

Mack 

to have a certain x-factor without effort. A mack can also be described as a John Tucker type character whereby he's hugely popular with girls and worshipped by boys.
mackin is the being of a mack.

"Who's that boy that everyone loves...he's a true mack"

Mack by theoneplayerplease November 18, 2007

mack 

to throw up

Friend 1: "Hey, where's Ted?"
Friend 2: "Oh, he's in the bathroom macking."

or

Dad: "Carol, your baby just macked all over me."

mack by urbanwha September 13, 2009

mack 

to engage in sexual intercourse

that slut macked him!!!

mack by anonymous January 5, 2004