A collective noun. These are groups of chicks who travel together on Friday and Saturday nights, walking into clubs and bars after 11pm like cowboys in the old spaghetti westerns.

They are looking for a drink and a fuck.

The shame of it is they are pig ugly harridans and what no sane dude is going to go for.
Dude 1: "Hey, Dawg, check out those three ugly chicks what just walked in!"
Dude 2: "Yeeech! The Unfuckables!"
by Wizards Sleeve September 23, 2006
Get the The Unfuckables neck gaiter and mug.
Someone who unfucks the planet by changing their douchy un-eco friendly habits.
Hey dickhead, Be An Unfucker and pick up your rubbish.
by The Unfuckers February 26, 2015
Get the Be An Unfucker neck gaiter and mug.
Unfuckable is the penis useless to fuck, not because the lack of erection, but due to its very small size, equal or inferior to 4 cm ( or 2 inches ) when erect, turning impossible the intercourse in the vagina ( ups and downs), to achieve the orgasm. In such cases, to obtain it, is necessary to use a penis pump to masturbate. The same occur with the buried ( in the pelvis) penises. Many times, the improper size refers only to the length of the organ, not the girth, that can be large ( only a big head outside the pelvis, but totally useless to move ).
" His unfuckable penis has a big mushroom head, but its length is only the length of that head, without a exterior shaft to sustain it."
by Willhelmina Plowes December 26, 2009
Get a unfuckable mug for your girlfriend Helena.
To correct a situation, or yourself if necessary.
"You had best unfuck yourself before I unscrew your head and shit down your neck!"
by Anonymous September 27, 2003
Get a unfuck mug for your cat Callisto.
Resolving a previously fucked up situation. Like an undo or back button.
Where's the unfuck button?
by hopkins December 20, 2003
Get a Unfuck mug for your dog Trump.
Group of under age boys or girls ( less than 18 y.o. in most countries and states of USA ) forbidden to fuck by law.
"These gorgeous girls are already woomen but are unfuckables by law, because they don't have yet 18 years old."
by Willhelmina Plowes January 02, 2010
Get a unfuckables mug for your boyfriend José.