Watching your wife suck other people's dicks is a buzz kill. And she understands that by licking other people's testicles, her husband's boner will get sharper. So these swinger couples swap to sharpen their senses, bring back the novelty, and make their orgasms brighter. Only I would make the lighting not so bright, then there would be more understatement and less embarrassment.
What would her son do without his mother. She teaches his girlfriend how to properly please her son. It all starts with a gentle sucking of the cock. Then it goes into a deep throat blowjob. And then the fucking begins in all positions. Missionary. Going in from behind doggy-style. Bouncing on the dick from above. Girlfriend's as flexible as a twig. Bends well in all directions. And moans with pleasure. But the whole video does not leave the thought of when to fuck the mother already.
Oh, I want to do it too, just with a young guy. That's how my boyfriend should fuck me.