Fat Slag 

An obese (overweight) FUCKIGN SLAG

that fat slag took my last ice cream,

Fat Slag by Jay cee September 29, 2006

Fat Slag 

Two people of the opposite sex which enjoy each others company in more than one way, and also enjoy the company of many others.

"I so saw that fat slag the other day with jimmy"

Fat Slag by gbum October 5, 2008

Fat Slag Jill 

A pig in knickers; a very ugly woman.

Jeezus! What a pig! Talk about Fat Slag Jill!

Fat Slag Jill by Scotty April 6, 2003

Fat Slags 

A cartoon strip in Viz comics conserning the adventures of Sharon and Tracy the archetypical townie girls

The falt slags come from Fulchester.

Fat Slags by black flag June 27, 2004

fatslag 

A person (specifically a child online) who is fat, annoying and bothering you.

omg! I was playing roblox earlier and this 8 year old was being a fatslag

fatslag by fatslag1010101 June 3, 2021