He gives Donna some feedback

Moaning, Susan slid off his cock and slumped facedown on the bed, looking utterly dazed. Frank chuckled and patted her rump, rolling onto his back as Donna purred beside him.

"That was so fucking hot! It was so wrong, helping my daughter get fucked, but it felt so good! Am I a bad Mommy, Frank?"

"You're terrible," he laughed. "What kind of mother does that? You're just a fucking slut, teaching your daughters to be sluts. And this one has the hots for her Daddy from the sound of it. Your husband's probably tapping her already. Or soon will be if she has her way."

"Oh...you're mean! I can't help...how they are...you don't have to be mean..."

"Just telling you the truth, you stupid bitch," he snarled. "Now shut the fuck up and clean my fuckin' cock! If you do a good enough job I'll fuck you."

"You're so cruel...but...I deserve it...I get so hot when you're cruel..."

"Which part of 'shut up and suck my cock' didn't you understand? Get that fuckin' mouth to work!" he snarled, pushing her head down on his nectar dripping meat, savouring her whine and grunting as she engulfed him.

"Yeah! That's a slutty Mommy! Suck that bad boy and I might be nice and fuck you!" He held her head down, savouring the wet warmth of her mouth and the sensation of her swirling tongue as she sucked and gobbled.