I jumped ontop of her and slid the knife under her shirt and bra cutting them both off after which I grabbed her bra and shirt and threw them across t...e room. She was sobbing like I had never seen before I smiled enjoying her crying. I shoved the knife down her pants not so much as touching her skin with the blade of the knife. I yanked up slicing through the clothing and tearing it to shreds, I grabbed her panties and pants which were blue jeans and I pulled them away from her throwing them. The bra cup ended right below her nipples, they were already hard and nicely on display. She decided no undies. If her juice ran a bit, all the better for the boys to see.All her ministrations had taken most of the afternoon. She stepped into her red heels and went to enjoy the wine as she waited for Greg and Colby. A Thai dinner would be delivered by 7pm.Greg arrived at 6pm. Jill met him at the door.“Oh darling, you are the sexiest woman in the world!”She did a pirouette as he stared at her.. I was not expecting to see what I saw when I walked into the Living Room. Mom & Dad was fucking the hell out of each other on the sofa. Mom was riding Dad’s cock, moving her pussy up & down on it. Dad’s hands were on both her tits, & he was sucking on one. Mom said, “Oh, Jackie baby, I just love how your cock fills my pussy.” as she ran her fingers thru his hair. I could see Dad’s balls were wet & shining from Mom’s puss juice. His cock looked so suckable, I couldn’t believe how bad I wanted to. Before sitting up though- she hooked her elbows behind my knees - so that when she sat up, my knees were spread & feet up in the air, cock, balls, ass on full display as she ground into my face. She licked my asshole as i thought i heard footsteps. Panicking, i tried to ask her who was there - but of course, my face & mouth were full of pussy & ass. She started giggling and laughing when she felt me try to protest, start to squirm."Now for your real punishment my little panty loving brother". I.