I have been married to my wife Mel for 5 years. Sex has always been a very important part of our lives and we are active swingers. last year we went to a swingers party in Manchester. It was a very good night, good conversation and drink flowed freely. Kinky games and flirting soon l,ed to a full on orgy. Both myself and my wife entered into the spirit of the night and had kinky fun with most of the other guests. However this is just the start of the story. It was on our return home the really hot action took place. we called it a night around 2pm and decided to get the bus home. We made our way to the bus stop and only waited a few minutes before the bus arrived. This was a very good thing as my wife was only wearing her black stockings, suspenders, a sexy see-through pair of thongs, black knee high boots, a short black mini skirt barely covering her stocking tops, a low cut sexy black top with no bra with a shortish black coat coming just above her skirt hem. We paid the driver and got on the bus which was now fairly busy with other revelers feeling the after effects of a good night out. We stood in the isle of the bus near the back. There was a group of four lad in there mid twenties sat 2 abreast either side of us. The two at the side of me were barely awake. the two on Mel's side were both in good spirits and clearly eyeing Mel's legs up, probably noticing her stocking top inch's from their face. Mel and I chatted in a low voice about the nights frolics comparing notes. It was about 10 minutes into our ride home when Mel felt something move her short skirt. She was quick to tell me in a low voice and had no doubt the lad sat at her side was lift her skirt up to perv at her stocking top clad thighs and thong covered bottom. I just laughed and said she should turn round and let him get a better view of her arse, Mel giggled and did so, sticking her bottom out slightly. The lad didnt hesitate and took this as a sign of interest and soon place his had softly on Mel's inner thigh and gently stroked up and down. He slowly moved his hand further up my wife's thigh and was soon moving to rub her arse cheek and then her pussy from behind. Mel grabbed my arm and was clearly blushing. Her breathing became heavier and her low voice was telling me what the lad was doing to her. Mel opened her gate and allowed him easier access to her soaked thongs. The two lads behind Mel were silent and entranced by Mel's bottom. the lad playing with Mel had a massive grin on his face and was totally unaware of me watching him, his mate just watched with a glazed expression. After five minutes or so the lad finally picked up enough courage and slide two fingers up my wifes pussy and started to finger her slowly and deeply. Mel tightened her grip on my arm and she was really getting into it. Her voice was even lower and her conversation had slowed right do to short bursts. she pushed herself onto his fingers and was slowly rocking on him. He picked up speed now and was three fingers, last knuckle deep up my wife's pussy. his speed picked up knowing he had my wife near orgasm. her pussy must have soaked his hand as Mel gets very wet. her face was now flushed and she was barely keeping her moans in, letting out a few low ones every now and then. she stared into my eyes and told me she was going to cum soon. I could see her fight her orgasm, making it last. The lad knew she was on the verge too and was nearly fisting Mel's pussy. Mel could only last a few more minutes and was soon having a large orgasm in front of a bus load of strangers. Mel grabbed my arm and started to twitch, her eyes rolled back, her head flung back and her mouth opened wide. Her body twitched and to any onlookers it must have looked like she was having a seizure or a fit, if only they knew. This continued for a couple of minutes. The lad was still deep in my wife's pussy pounding her with his fingers. she did her best not to fuck them back like she would do normally. Mel then came back down to earth and calmed down. The lad removed his fingers and placed the in his mouth sucking his fingers, before wiping them on the seat. He then qucikly turned to his mate whispering no doubt telling him how wet my wife's puusy was and how he made he come. It was only a couple of minutes later the lads pressed the bell and got up to get off. The lad who fingered my wife, pressed himself against her arse and she could clearly feel his hard on rubbing against her. he didn't make any eye contact with her until he was off the bus and it was moving level with him. He then lifted his finger to his nose sniffed them then sucked them whilst winking at Me. She just smiled at him and gave him a little wave as we took our seats. We chatted about the lad fingering her all the rest of the way home and Mel said it was the highlight of the night and the kinkiest thing she had done to her for ages. Just a shame she didn't get to fuck him.