Macback 

Jumping on someone’s jokes and using as your own because you are overweight and too lazy to come up with anything witty yourself.

Guy 1- you look like a sweaty fat fuck.

Guy 2- look at you sweating like a fat fuck
Guy 1- bro, stop macbacking on my jokes! That’s not beauties

Macback by Fatmacattack November 6, 2018

Matback 

in other words mattress back describes a fat person you can use it for all people like if they are skinny you would say you single matback and if they are fat you call them a double matback

Girrrrrrrrup big matback

Matback by misterrrjosh November 3, 2019

MacHack 

Now known as A.D.H.O.C, MacHack was a conference for Macintosh programmers that began in 1986. Some 'hacks' that emerged from the MacHack sessions were implemented in later versions of MacOS. Recently renamed because of the negative connotations of 'hack' in the media.

Drank some Jolt Cola when I went to MacHack, stayed up all night and screwed up the stack...

MacHack by jGNE man November 20, 2004

Manbacking 

Three or more dudes spooning with boners.
Three or more dudes have anal sex in bananna formation.
Three or more dudes with there boners cupping each others asshole.

The three wise men were manbacking in the stable.

Manbacking by the traveling troll October 4, 2010

macack 

used to refer to ones penis.
Yacack can be used to refer to someone else's penis

Guy 1: "Hey look at macack!"

Guy 2: "Dude really put your pants back on. I'm starting to think you really are gay."

macack by Doober McFly March 8, 2011

mayback 

A very expensive and nice car.

Owned by rich ass gangsta niggas, ballas, pimps etc.

"I bought the mayback now they all wanna lick me" -36 Mafia

mayback by Big Paulie July 9, 2006

Macrackle 

A famous twitch streamer who is often called MacDaddy and MacBent for his memes concerning his no no square.

Man have you watched Macrackle He’s so bent!

MacDaddy is a no no square warrior.

Macrackle by NONOMACDADDY November 25, 2018