In my vast (56 years) of dealing what I define as size queens, regardless of sex, is that they are almost universally annoying, bitchy, shallow people who do not understand the word no. "Oh, I can only be satisfied by a man who can hit the right buttons in my ass or vagina!" Yeah, right. I've yet to have a satisfactory sexual experience with a size queen. They say they want it. You give it to them. Then they whine in pain or hold you at a distance so you can't completely rip them to shreds. Nothing turns me off more than a size queen insisting I at least show them the goods, relentlessly plead or cajole me send to them photos so they can jack off to them, or -- the most annoying -- men or women who, every time you turn around you find them drooling at the back of your arms thinking that you'll eventually give in. I know I'm not the only guy with a big dick who feels this way.
A few years back I did give in to the insistent begging of a friend's friend who wanted me to fuck her. I gave into her fetish leaving her bowlegged and bleeding from vaginal tears. She never bothered me again. But I suppose there are many size queens who are into just that, having the most painful sex possible.
Major turn offs. Put them all in a room full of baseball bats and let them rodger themselves until the cows come home. At least the cows (and other farm animals) should be relatively safe by then.