I felt Marissa lose her rhythm and groan. I opened my eyes and saw that her brother was now standing behind her. Aiming his cock at her pussy. I gave Logan a little nod of permission and he sunk into his sister.

Liam was standing off to the side, watching us. His thick dick in his hand. I motioned him over. Let him feed me his cock.

"Oh, God sis," Liam said, "Your mouth feels so good."

The four of us formed a little fuck machine on the lounger. Logan driving into Marissa while she licked at me and I lapped at Liam. But watching Marissa get fucked made me...