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

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

How are your futtocks? 

How's your day going? (British)

friend 1 How are your futtocks?
friend 2. At their furthest reach, dear boy! (Very well!)

How are your futtocks? by talk2me-JCH2 April 3, 2021

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

futtocks 

1) Any part of the body you are referring to.
2) A lazy or silly person whom you wish to motivate into action
3) A coarse expression of annoyance

1) Get off your futtocks!
2) Shut up ya futtock (best said with a northern accent)
3) 'Oh futtocks!'

futtocks by Rosie and Briony May 21, 2006