Anyway, when he came up, after a bit of a chit chat, Sue spontaneously came out with "you know, I haven’t seen you spanked in a while…". I asked Sue if she would like that, and she said she very much would. So I told david to change into a pair of his "punishment panties" and bring me down his hairbrush, because he would be putting on a little show for Susan.
Sue had a big smile on her face as david appeared in his little blue frilled panties and nothing else, clutching a hairbrush. He was visibly excited in his panties. I made him stand in front of Sue and I and explain why he enjoys young female pop singers so much. After torturing him for a bit, and watching his excitement grow under his panties, I took him across my knee as Sue moved out of the way and perched nearby for a good view.
I slowly peeled his panties down to his ankles and then started in with the hairbrush on his defenceless little cheeks. As usual, I didn’t spare the strokes, and my boy was bouncing around my lap in no time flat, and Sue had a big smile on her face. In honour of Sue's presence, I pulled his cheeks apart with my hand, and smacked the hairbrush up and down his tender crease, concentrating my attack just near his little hole.
I got some very vocal begging and pleading from that, let me tell you. Even after all he's been through, he's still embarrassed to be spanked this way in front of my sister.
"May I?" she asked.
Of course! I stood david up, and Sue and I changed places. He still had a BIG erection which he was forced to lay across Sue's lap. She then started smacking him as well, not sparing his thighs. She also pulled his cheeks apart a bit and gave him a few smacks up in there. Sue has no problems seeing david's anatomy!
"Keep going." I said, as I went up to our bedroom to grab some equipment. I came back down with a butt plug and my Hitachi (it's still fairly new - a gift from david a couple of months ago). I told Sue I wanted to see if it would work on a boy.
First thing I did was slide a towel onto Sue's lap. Then, "hold him apart?" I asked her. She spread his cheeks nice and wide. I dripped lube into his hole, lubed the plug, and pushed it home. When it was in, Sue patted the end of the plug. Then I plugged in the Hitachi and touched it to the base of the plug. david moaned sluttishly.
"Get his cock out." Said Sue. Great minds think alike! I made him spread his legs, reached under and pulled his cock and balls back behind his thighs and told him to clamp his legs together tightly. Now, under normal situations, he loves this position, as it's a bit tougher for him to cum, so it prolongs things for him. However, I do believe this is the first time any woman other than I has seen him in this position, and so I'm sure it was mortifying for him.
I then played the Hitachi up and down his penis and balls.
Observing david's reaction, Sue asked "is he going to cum across my lap?"
"Yes" I said, simply.
"Let's switch places, I want to use it." said Sue.
So we switched again, and we had david, cock and balls back out again, but this time across my towel-covered lap. Sue had the Hitachi and was experimenting with it. When david wasn't looking, she even pushed it up against the front of her jeans and said "nice!"
I gave david a little hand spanking as Sue worked the Hitachi up and down, and up and down. She went from tip to shaft to balls to butt plug, then back down again. Up and down. Up and down. She was looking fascinated by the whole thing, but more like a scientist examining a bug rather than a woman getting excited!
Meanwhile, the sisterly masturbation was taking its toil on david, and he writhed across my lap, thighs clamped together. He couldn't help but stick his butt up in the air as the Hitachi worked its magic. Once when he did that I grabbed his ball sac and made him keep his butt up high like that. Sue mashed the underside of his cocktip into the crease between his thighs with the bulbous Magic Wand as I held him up by the balls.
Then it started. david yelled out "no! no!" (he often does that when he cums - it's a long-standing fantasy of his to be "made to cum" so he often has that running around his head when I do something that makes him cum). "NO!" he yelled as he spurted out a stream of white cum down the backs of his thighs. Sue kept her distance, and I grabbed his cock to aim it down towards his legs more.
Sue had a lovely little smirk on her face as she shut down the Hitachi.
I asked Sue for a dampened kitchen rag, and cleaned the cum off him. I kept his butt plug in. I led him to his very favourite living room corner, and made him stand there, hands by his sides, panties around his knees. As a little extra dose of humiliation, I made him hold an 8.5x11 sheet of paper in the corner with his nose. This ensures he stays put, and does not slack off on the nose in the corner thing.
Sue had to leave, but before she did she went over to david's corner and thanked him for letting her help out with his spanking, as she really needed a good dose of kink. She laid a little kiss on his cheek and patted his butt plug.
"How long should I keep him there?" I asked Sue.
"Hmmm... is a half hour too long?" she said.
"Not at all!" I said back. "You hear that sweetie, Sue would like you in your corner for a half hour. If that paper drops, or if that plug falls out, I bend you over for a strapping, and then you'll start corner time over from the beginning. Understood?"
"yes dear," he said, meekly, nose in corner.
Yummm! I love when he's obedient to me in front of my sister!
I think a half hour is a pretty long time. I have never tried it myself, but I'm sure it will be painful and the time will drag. But I figured after what he just got, he needed a little penance to balance the scales!
Besides, his butt hole needs a little stretching, because Adam still needed to come out to play!