look up any word, like swag:
 
1.
a fat whore, presumably your ex-girlfriend or possibly your friends mother.
"dang adam your mum is a slagbeast"
by archiewordgroup August 26, 2009
19 3
 
2.
A general term for a large obese human, mainly females, with shitty personalities and overall negative attitude.
Oh dude, she is such a slagbeast!
by Lane Carmen June 24, 2011
9 0