Did you fuck a lot of girls capable of "extra moves" with their body ?
I mean, some "insolite stuff" that only gymnast and great dancers can do:
https://www.youtube.com/watch?v=-8_gFwPzwM8 (at 0:43, a bit more and this woman can suck balls and take it in pussy of the same guy

So do you have anecdote to share with girls who did awesome stuff physicaly during sex with you ?
I only remember Judith fox was very "souple" but maybe you have more great exemples ?
(i'm not talking about great rimjob or blowjob or dp, gap ect, this any girls can become very great with training/routine at home, but girls who push the body to the limit is very more hard and need lot of spécial training)