Wednesday was pretty normal until 18:45 when Carol informed me she stll had the strap and needed to take it round to Helen's. She left and I decided to have a quick wank, I stripped and laid on the bed (idea being I could nip into the shower when she got back). I started stroking thinking about what happened yesterday and what Rob was doing now, feeling sure he would fail again as i would tomorrow no doubt. I soon shot all over my chest one blob of spunk getting up to my lips which I licked up thinking how Rob would be getting the belt from Helen.

Time was getting on so I dived into the shower it was only whilst washing it occured to me Carol hadn't returned, so finnished up got dressed and went to the pub. Carol came in about 10 mins later, I asked Where she'd been all this time and was told she'd visited a friend. 10 mins later Rob and Helen joined us, he was very stiff legged so Helen got the round, "lost again mate" I said, he looked at Carol and just nodded. It was obvious I was being kept in the dark about some thing, Rob and I didn't talk much but the girls were very animated and giggly but spoke in whispers.

Thursday another normal day, after dinner I showered then came down naked to find Carol in the living room in her robe, I knelt at her feet waiting to be allowed between her legs but they stayed firmly closed. Then the doorbell rang. Carol told me to get the door as i was, I pulled the door open enough to poke my head round to be confronted by Helen holding the strap. "Hello pervert" Helen said as she pushed passed me " silly girls we keep forgetting to hand the strap over, in the living room is she". I shut the door and followed her into the house. Amazingly she ignored the fact I was starkers and my cock was fit to burst, throbbing and waggling about as i folled my fully dressed sister in law. We entered the living room to find Carol waitng for me ready naked legs apart on the sofa, Helen just walked over kissed her then sat in a chair.

Carol said " I was witness to Robs attempt yesterday and as we agreed we love our husbands so aren't really putting the effort into the strappings so decided we would punish each others husbands, that's why I was out so long whipping Robs arse as you saw he was very stiff legged as your going to be soon". Helen was just sat staing at my bobbing erection smirking. "Go on then Paul show me how you satisfy my sister BOY" she said.

I Knelt on the floor in front of Carol and pushed my face between her legs and started lapping trying to prove to the sisters I was a man, but my cock was straining as they chatted about yesterday. "Did you enjoy watching Rob's ridiculous attempts to satisfy me?"said Helen. " Not really but got a bit moist strapping him. Do you think being watched makes them too excited to perform" replied Carol. "Probably love his little thing looks ready to shoot now with the way its throbbing or maybe it's the way your humping his face" Said Helen, Carol informed her I love it. As she said that she started bucking her hips in my face as she came. Carol pulled me up and said "come on baby show her what you can do" as she lined me up with her hole. As I slid in I looked round at Helen, she was staring at her watch. I tried a slower steadier pace but trying to perform on you wife with her sister watching my dick over ruled my head and was soon cumming. "Fucking hell stud 90 seconds twice as good as your last attempt" yelled Helen, "OMG Paul your getting worse I've only just got started", the sisters were in hysterics as Carol pushed my head back down between her thighs, I must admit it was more about Carol rubbing herself in my face then my licking that got her off. As soon as she came she was off upstairs to clean up, it was Helen instructing me to get in the dining room. She didn't hold back I was howling after 5 and crying by the ninth stroke, when she had finished she took a photo of my arse then stood up full frontal.

When I'd sorted myself out Carol took me upstaris where we hugged, she reassured me we could stop this anytime I didn't feel comfortable with it. I knew we both wanted to see what effect a large cock would have on us. We then went and met Rob, he apologised for not warning me as Helen told him she would cut his balls off if he did. We then chatted how we would cope tomorrow when we would perform our last attempt next to each other in the same room. We looked across the room and the girls were laughing their heads off, neither let us know what the joke was when we joined them