If a pussy is wet enough, hot enough, and tight enough, that shit's like the Borg...resistance is futile.
Sometimes, not even changing positions can save you. As soon as you slide back in, the feeling picks right back up where it left off.
Most of the ladies love that shit. 30 minutes (or hour) pay for 8 minutes of work. Who wouldn't.
At the same time, it feels good to nut that way, because the sensitivity level is off the charts. It's about the mileage, though.
Doesn't always happen, though. I've done quicks, and they've went about the limit of allowable 'quick' time. In that case, I do bring a few extra bucks, apologize for 'taking too long' and offer consolation.
Ladies, a trick to help expedite QV's is to pre-lube. Do this before he gets there (just a dab...don't overdo it). if you know DATY is unlikely, make that pussy wet already. Natural wetness is one thing, but if it takes you a while to get 'warmed' up, use a 'cheat code'. Hell, he won't know. He'll just think you're really into him.
Looking really hot helps, too. Tiny skirt, that girly 'smell good' shit y'all be wearing. And 'throw' your hotness at him, by perhaps rubbing up on him or making sure he gets a handful of that ass right away. These definitely trigger horny rage in many men, and are likely to make them cum faster.
Being off putting does the opposite, and makes these encounters drag.