Experienced man, to whom young girlfriends asked for sex, rightly distributed their forces. While he fucks one, the other excites her clit with a toy. Everyone is in business and satisfied. If you change partners, then long over her not have to pant - can quickly cum or jump on top herself. And the girls do not get bored, all the time caressing not only themselves, but also their partner.
So probably in the future computers will take payment from clients and assign whores to fuck. It's interesting that the computer brain allows you to strangle and rape the brunette, but not to piss in her mouth. I thought he was going to strangle her, but he didn't. Apparently a mature man realized that then there would be no one to suck and poking his dick in the meat - in decent society is mauvais ton.