For some reason, one always just about stands out over the others and is feted upon by all of the males present, despite the fact that not only is she at best decidedly average but, at worst, wouldn't get a look next to most reasonably attractive women (well - at WORST you'd be turning her down after ten pints of any regular night out). It is she who is least horrid of the pretty shitty group, the best of a bad bunch...Queen of The Pigs.
The latching on of the guys to this massively-overrated horror is termed 'Queen Pig Syndrome'.
"Her? Why man, she's nothing special"
"Huh? What do you mean?"
"Dude, look around - the only reason you're even looking at her is that Elaine looks like she's had a stroke, Sandra has less teeth that my grandma and Joanna may well be a John from where i'm sitting"
"Ah - queen pig syndrome! Phew, that was close. Didn't realise what I was doing...".