"Pop..." Betty positioned herself for doggy style, and Michael didn't hesitate.
With one hand guiding his penis, he aimed for the center between Betty's buttocks, tapping the tip gently against her labia a couple of times.
Thanks to the lubrication still fresh from their previous activities, Michael's impressively thick penis smoothly re-entered Betty's vagina with a firm "thump," accompanied by a muffled moan from Betty and the sound of their flesh colliding.
Michael's hips pressed tightly against Betty's buttocks, leaving no space between them, with only his large, dark-red testicles, covered in pubic hair, visible at the entrance of her vagina, completely obscuring it as his penis buried deeply inside her.
"Thump, thump, thump..." Michael began thrusting rapidly from behind Betty, each movement causing her buttocks to ripple and waves of flesh to undulate.