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"
by gbum August 08, 2008
2 more definitions
A cartoon strip in Viz comics conserning the adventures of Sharon and Tracy the archetypical townie girls
The falt slags come from Fulchester.
by black flag June 27, 2004
An obese (overweight) FUCKIGN SLAG
that fat slag took my last ice cream,
by Jay cee September 29, 2006