Simultanious vaginal and anal penetration or sometimes simultanious vaginal penetration. Generally this refers to two men using their penises for penetration, but objects, fingers, or toes may also be used.
Janet... Mark... Sherry and Tom were sitting in the living room... each of them relaxing after dinner. Janet felt pleased as Sherry and Tom seemed to be hitting it off well. She had seen the admiration in the eyes of Tom when he had been introduced to the redhead... and had seen the frank approval of Tom in the green eyes of Sherry. All in all... things looked as if they were going to work out just fine for everyone. She and Mark were sitting on the sofa... with Sherry and Tom sitting on the matching love seat across from them... and Janet was just about to see if anyone wanted another drink... when there was a knock on the front door. "Chuck!" she heard Mark say... somewhat surprised. "I thought you had to go out of town?" "So did I. But after spending a few hours on the phone... I found out what the problem was and what to do for it... then made a few more phone calls and did what all successful bosses do. I delegated the authority to others. "I know I should have called first... and that I've already missed supper... but I thought I'd stop by anyway. As the two men entered the living room... Janet saw the brief look of surprise... and perhaps disappointment... flash in Chuck's...