Not simply someone who is just coyote ugly, the phrase usually implies she is ugly, unkempt, over-weight and has hygiene problems such
as a fishy cunt or skid marks on her underwear and her arse really stinks
if you go to mount her doggy-style. She is also sexually promiscuous - a person who spreads sexually transmitted
diseases. Her victims are always extremely horrified when they wake up the next morning. A somewhat
crude term, the phrase is only usually used by people
who are common, of low intellect or mingers
England and from Scotland.