Its revolting, objectifying pack behaviour. Yes, we are visual creatures, women as well as men, and will make snap judgements based on our immediate apprehension of someone's attractiveness, but there is simply no general culture of groups of women roaring rating numbers at passing men who are minding their own business.
Plus if you google 'marking women out of ten', this is an extract from the top result. Please tell me it is not sexist, reductive, objectifying viciously patriarchal tripe:
Regardless of who you are, or what you're into, I can pretty much guarantee you're familiar with the base ten female rating scale.
The problem with this scale is every man has created his own definition of what each number represents. This is somewhat understandable as one man's 2 can be another man's 10. This is a quirk of life we should all be thankful for as every time a guy takes a dive we not only pull the grenade from the game, but it's just one less guy to usurp in the field.
For this reason alone, any guy happily out hogging should be left to do so in peace. While you might not want to see your buddy leave with Jabba the Hut, he's doing a service to everyone else in the game. Plus if that's what gets him off, who are you to deprive him?
If you're one of these men, then this scale is not for you personally, but as a point of reference to be used when talking to other Men. Nothing will label as an outcast quicker than claiming Rosie O'Donnell as the top of your celebrity fuck list.
We've all taken home an 8 from the bar, only to wake up next to a 6. Thanks to high-heel shoes, low-cut tops, soft lips and hard drinks the girl's original score can be greatly inflated. It's up to you to take the average of the good, the bad and the ugly versions of the girl; then adjust her score accordingly.
I've known girls who walk around as a 6, but will turn every guy's head once the sun has set and the girl has performed some sort of sex-appeal witchcraft in the hours before heading out. In a scenario like this with a 6-8 split it's best to simply take the average and slot her in as a 7. This way your rating is always in the ballpark, regardless of the time of day.
Efficiency > Accuracy
The entire point of this scale is to have a quick, and accurate, way to rate girls and relay that rating to our friends.
And the crucial point is very clear - this is 'woman as armcandy/fucktoy'. Women are trophies to show off to other men in this universe. And it sets up the noxious division - women are there to be looked and rated at by men, who are the connoisseur judges of female worth. There's no sense at all of men being equivalently judged, or that women are agents enough to look back at them. These women don't look, act or talk, apart from performing 'sex-appeal witchcraft' to get themselves further up the male scale. The idea that women might not care, and might be right not to care is not considered possible. If you are a woman who doesn't prioritise winching yourself up the scale with lipstick, low-cut tops and heels, you're probably dog-ugly runs this logic.
And Rosie O'Donnell isn't a successful actress, comedian, writer, philanthropist and gay rights campaigner, she's just a 1 on the scale. Because all that counts is whether a random man wants to fuck her.