I think we've all seen it: the busty natural video with the girl's tits bouncing everywhere, typically either from getting pounded while bent over or from riding the guy's cock like a pogo stick. Let's list the scenes with the hardest-bouncing tits that were the MOST memorable visuals. There are actually three three variants I'd like to see the best examples of:

1) The classic case is a girl with big natural tits having sex and the timing of the guy's thrusts being such that her tits are repeatedly smacking her in the face and in danger of hanging several inches lower by the end of the scene or possibly just ripping loose from her chest entirely.

2) The second case is a girl with nice and firm tits that are not particularly large -- C-cups or smaller -- who is surprised to find herself in the unusual situation of having out of control tits.

3) The last case is a girl with moderate sized implants -- C-cups to DD-cups that are extremely firm or even rock hard -- who is getting hammered so fast that her implants start swinging around as much as if they were big naturals. They'd be visibly shifting under her skin and doing other stuff implants just shouldn't be doing normally.

All of these cases are even better if she tries desperately to hang on to her tits or otherwise get them back under control. Better still is she tries and fails -- her tits keep popping loose, or end up going sideways and in circles, or he pulls her arms back so she can't reach. I'm not saying the girl should be crying or screaming or anything, but she should be obviously preoccupied with her tits being out of control and not just doing the usual porn scene, and it should be far beyond the usual stuff in a big-tit video.