We sat chatting and discussed many things bus stopped for dinner I offered her dinner she readily accepted we had dinner and back to seat and bus star...ed and lights were off all people started sleeping I just acted as I was asleep and touched her hand she did not respond she wake me up and told that she was not getting sleep and want to sit near window so I said ok and got up while getting my dick was so much bulge she saw it and just gave a naughty smile I got a green signal she got up from. Lisa was supposed to be on the other side of the partition, and we would just trade places. Only problem was, I couldn't get this thing to spin tonight. I was pushing at the proper place as hard as I could, and was beginning to panic as I heard him winding up his speal."So now, Mark becomes Mary, my NEW assistant, he pronounced, and I heard the tap of his magic wand' on the box. The flash and smoke went off under the box, and I was still in the wrong place. But I felt a searing hot flash. I would put the diaper on with my shit hole packed full of his filth and the butt plug rammed right up inside my chute and was not permitted to remove the diaper until my Master arrived home that evening from work. I would go about my business throughout the day and even wore the diaper while out running errands knowing that I stunk like a filthy septic tank and people would stare and wrinkle their noses at me but I didn’t care at all. By late afternoon the pressure in shit chute had become. She landed on her butt, with her legs spread wide.She looked at me as I enjoyed staring at her bare crotch; but instead of crossing her legs, she gave me a dirty naughty smile."I just had to get out of my thong…" She slurred, smiling at me. She then pulled her skirt up to her tiny waist. My eyes focused at her swollen pussy lips, glistening in the dim light. “Do you like what you see…?” She suddenly asked me.I nodded my head, as I saw she had a glazed look in her eyes and a naughty smile on her.