Green’s Dictionary of Slang

horrorbag n.

[SE horror + bag n.1 (3) but note whorebag under whore n.]

(Aus.) a, usu. unattractive, girl or woman.

[Aus]B. Moore Lexicon of Cadet Lang. 188/2: horror bag an ugly woman usage: Give our regards to your horrorbag [...] the junkie cum vacuum-cleaner ANU sewer slag.
Twitter 25 Apr. 🌐 Ann Widdecombe is not a cuddly dancing grandma, she's a vicious far right horrorbag who insisted pregnant prisoners give birth in chains.