The most creative bisexual sex as couples swap, making a perfect foursome

There was a couple having fun on a couch as a girlfriend with tattoos all over her body rode her man's back as the guy held her waist as continuously groaned. They are found red-handed by another tattooed couple. The couple also gets sexually activated, and they decide to join them to have creative bisexual sex. The couple swapped as one of the bitches drilled in all of her holes at the same time.