"Hey, look, Auntie Mirabelle's coming!" she squealed, then lashed Mirabelle again.

Mirabelle screamed with pain, but she thrust her tits out for the whip. The whip lashed into her tit-mounds.

"Uurrhh! Help!" she wailed, climaxing in a frenzy of pain and lust. She wanted to die with shame, but she was helpless. Her pussy spasmed over the massive hard rod of William's cock, fucking up and down the full length, taking it all in her fuck-channel. She wailed and moaned, her tits taking another lash of the thin leather whip-tail, her tit-mounds heaving and jerking. The thin lines of agony were now all over her tits, and her swelling flesh was crimson with the force of the blows. Her tight asscheeks jerked as Eileen whipped them, beating another deep welt into her skin.

She came, feeling her pussy walls throb around William's cock. She couldn't tell which was pain and which was lust any more. It was all one and it made her come, endlessly, helplessly. She fucked up and down on William's cock, her pussy going out of control, sucking at his swelling flesh, tightening each time the whip lashed her.

William gasped, his eyes running over the whipped masses of Mirabelle's tits. His ass heaved up, ramming his cock into her pussy harder and faster as the cum boiled in his balls.

"Oh, yeah, yeah! I'm coming!" he gasped. "Whip her! Fuck, I'm coming!"

"Come on, William, come on!" Eileen screamed, beating her aunt's ass with an incredible fury. "Fuck! Come on! Shoot up her cunt, William! Shoot up her cunt!"

Eileen gasped, sliding her fingers down to her trembling cunt, rubbing it. Her little white slip flicked around her thighs as she moved. She lashed Mirabelle's ass, her long legs shaking excitement.

"Come on, Auntie! This is a real man up your cunt, make the most of it!"