does your dad go in your room ever? I was never allowd to have a rabbit because my dad was allergic, but he never went in my room anyway because I had guinea pigs in there. well I had kari for a whole month before my dad moved out, and he still does not know that lol whcik makes me think that he obviously did not pay to much attention when I walked right past him with wood, mesh, a cat carrier, a litter box, a bunch if cat toys... lol I would keep him in your room at all times, take him outside only when your dad is not home, and dont say anything about benjimen to him, in all likleyhod he will completly forget everything e said but if you say anything it will do nothing but remind him. hope that helps a little lol