And then there was three

As they sat there and talked, my face supported the woman's weight as her ass grinded against me as she made small movements as she talked, movements one doesn't realize they do when sitting still. I feel Sarah stand up, the muffled sounds of her feet carrying her across the house and then returning, her weight slamming into my stomach when she sat back down. I was doing everything in my power to focus on breathing when I felt a hand rest against my crotch, the fingers massaging the fabric and thus my prick. It dawns on me Sarah was playing with me, putting me through agony knowing I couldn't move. So focused on the two girls, I didn't hear a third one come in, her presence being announced as her weight slammed into my lap and erect crotch. Luckily, it was laying flat due to the fabric cause it surely would of been broken in two as the woman's weight settled on me. She felt like she was full of energy, each spout of laughter would result her bouncing up and down on me. That combined with the small movements like the ones being done on my face resulted in the crappiest but best lap dance I've ever received as the woman unknowingly pleasured my dick.