I see now that it was a mistake to give you too much latitude. Some kind of punishment is appropriate. I could tell your parents' 'No!' he cried, inte...rupting her-fearing this above all else. 'Or I could discipline you myself, which do you prefer?He immediately agreed to the second option.'Alright' she commanded. 'Drop your pants and lie across my knee'. He looked at her in disbelief but obediently lowered the garment. 'And your underpants boy, come on I haven't got all day'He wished the floor. Howie and the drone operators were out checking everything out early. Howie had assembled all 18 of the devices and they were behind the new wall that had been built. The only thing left was to install the battery and turn the key to arm them.The two gun drones had been checked and rechecked; there were at least a dozen 500 round belts assembled.All the drone batteries were fully charged as were the controllers and batteries for the laptop and cameras. The drone defense was ready.On top of the. You... I'll stay back here on your bed so you won't see me, it'll be like I'm not even here."I can't believe this is actually happening. My brain is in panic mode, trying to be rational, listing off all the reasons why I shouldn't let this happen. But my cock? Still throbbing angrily for attention, demands we continue. So without saying anything I turn back to the screen and hit play while my sister lays out on the bed behind me.As the taboo scene plays out before us, I slowly continue to pump. A little is better than nothing. I held her comfortably in my arms as she was overcame by a powerful orgasm making her body shivered. She looks amazing as i watched her. Moments later, she recovered her composure. She wanted a change of position so she laid down on her tummy. I peeled her ass cheek opened and helped myself to her back door. Stabbed it with my tongue ensuring a few inches in. I rimmed her butt hole and gave a couple of kisses around the bottom cheeks especially. She gasped a few.