For men a sphincter doesn't need to be pink, a dark brown star is even more attractive. It's all about the feeling. and that's why matures are so nice. They don't want condoms because they want the warm feeling inside too from the warm sperm.

A typical example of a male producing his ejaculate. The female gives him the choice of one of her holes where the male can produce his ejaculate. His choice was fallen on her rectum. At 5,37 he is allowed to let go his contractions and he produces his ejaculate in her rectum with firm and healthy pulses.