Mattback 

A large fatty growth that makes your back and head look like they are one solid piece. Often it makes you walk like a penguin.

Move, your Mattback is covering the sky.

Mattback by Jebuscriph March 12, 2008

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

matt back 

A promiscuous woman who engages in coitus with many different partners and thus should attach a mattress to her back to increase time efficiency.

Ay Wortimer! Do you recall that matt back we double-teamed last Friday?

matt back by Nick Ryan and Dean Gomez September 10, 2007

mattacks 

What everyone wishes they were. A level of awesomeness that makes everyone else look like a waste of skin.

That's a Mattacks so you may as well not bother trying

mattacks by Claude Toobitts November 14, 2014

Mattacky 

Often used in homosexual or slash fanfiction, Mattacky is a nickname given to the pairing of Avenged Sevenfold frontman M. Shadows and rhythm [guitarist Zacky Vengeance.

Mattacky is a delicious pairing that should be used more often.

Mattacky by scuzzbucket December 9, 2008

Matback 

Matress-Back, meaning a girl is a "slag" and always has a back to matress doing "the business". Also means that a girl is a prostitute.

1) Bro, that gyals a matback, been with bare mans

2) Oi, did you know Sophie is a matback these days?

Matback by kyasper September 7, 2005

mittbackenbeast 

One bad ass motherfucker. Can only exist one at a time.

Is that the true mittbackenbeast?

mittbackenbeast by Mittbackenbeast December 11, 2016