For sure, every time I get fucked, especially on my back, my toes curl up good and tight and when I get fucked to orgasm, forget about it I should have all broken toes by now. Even better is when a top's toes curl when he reaches orgasm. You know for sure the nut was good and strong and satisfying. Woof !
If a bottom's toes curl up tight when getting fucked then you know that powerful pounding dick is hitting those nerves up inside his asshole just right.