flattocks 

Describes someone with flat butt.

A person with flat rear end is an example of someone with flattocks.

flattocks by Sea Saw December 29, 2008

Fattock 

A fattock is a rotund, larger friend within a social group that always eats too much and often orders the most food when eating out etc.

Simon: Marc, why have you ordered SO much food... it's 10am?
Marc: *insubordinate yelping and denial*
Simon: You're such a fucking fattock.

Fattock by mumpaidforthis August 19, 2014

futtocks 

Disproportionately large and heavy buttocks.

Look at the futtocks on Russell. They make his head look really tiny.

futtocks by bernardhodesmond February 21, 2009

Fartocks 

When you fart and it makes your buttocks slap eachother...

Wow...those were nice fartocks?

Fartocks by Hope May 4, 2004

flatcocking 

(noun) Slang term used to describe lesbian sex.

Shitpants and her friend there have been flatcocking for so long, they are starting to look alike.

flatcocking by Dave Brorsen February 23, 2006

fratjocks 

The best of the best on campus. The Fratjocks fuck the puny Pledge Boys on their 450 foot yacht. Grant Macdonald is very fond of the fratjocks and even on occasion invited them to the cockship.

Boy-“bro the fratjocks are fucking the pledge boys in the showers right now!”
Girl-“Well the fratjocks are just that cool I guess.”

fratjocks by thefortpotoato July 5, 2019

Fattocks 

The buttocks of a grossly obese individual. Most often a ghastly and unnerving sight to behold

Crikey me! Look at the fattocks on that Mc Donalds addict!

Fattocks by [Harry^Hardcore) July 19, 2007