My sister, who I think still has a nice figure, works hard every day at butt-beautifying training. Apparently it's extremely effective at lifting and tightening the hips. She says that and never misses out on her training, but I know the reason why...My sister's claim that she's looking for a butt-beautifying effect is just a pretense, but what she's really working on is dick-tightening training to make her pussy extremely tight. When I think about it, I want to try it, I want to fuck her!! I can't hold back anymore!!!