Lindsey's mouth.

Frank would normally be satisfied cumming in either of the beautiful women he had just fucked silly but he paid a lot of money to finally live out his sexual fantasies. He unceremoniously yanked his cock from the warm confines of the doctor's quivering cunt.

"Sorry, Red," he laughed, giving her a playful slap on the ass before climbing over the girls to stand over Lindsey.

"Oh yes!" the blonde purred when he lowered the tip of his cock, slick with the girls' juices, to her lips. He didn't need to command her to open her mouth as she hungrily grabbed his thick shaft with her hands and stuffed her mouth with cock. Frank grinned at the sight of the beautiful nurse frantically bobbing her head up and down his cock, realizing she must have been worked up watching him fuck the other two girls.

The only hint that he was about to cum was when he grabbed the back of her head to hold her still so he could thrust a couple times before emptying his balls down her throat. He was impressed she didn't gag and managed to swallow most of his load.

"Fuck yeah!" he groaned, pulling his still hard cock out of the blonde's mouth before collapsing on the bed.

"Oh my God, he's still hard!" Lindsey gasped, licking her lips clean of his jizz.

"You should take it easy, Frank," Katy warned. "Xentrex is still an experimental ****. Your heart..."