RiderFan said: The girls aren't touching, no intimacy involved, using a phallic object, etc. This is almost exactly how many websites list "lesbian" content. It may be girlxgirl but it is not yuri in any way.
"Girls loving (any number of) other girls romantically or sexually. This includes kissing, groping, and any kind of sexual or romantic act. Basically, there needs to be something in the picture that makes it clear that the girls are more than just friends.."
Well, there are a lot of images that are technically "yuri" but I hate because there's no intimacy. Sucks, RiderFan, but it's hardly the first on Danbooru.
How do you know there's no intimacy? Also, using a phallic object doesn't automatically mean that you're not a lesbian or that the picture is not yuri. Yuri fanbois/fangirls with their narrow definitions of how love-making should be or how anybody should live their own lives are the biggest idiots. Not to mention bigots. "Oh, this is yuri.. but if a girl is using a strap-on, OHMYGOD SHES NOT YURI ANYMORE MY PERFECT IMAGE OF PERFECTNESS IS RUINED I THINK ILL CUT MYSELF TONIGHT :("
I think his point is that the picture doesn't depict them as enjoying it in any way: there's no touching, as he mentioned; no sense of intimacy; nothing that- by the given definition of yuri- would lead you to think this is "girls loving other girls." Assuming they're two straight girls being forced into the above situation, does it qualify as yuri? In this case, that seems a more likely answer than that they're willingly taking part.