When Debbie realised it was John, she began laughing immediately. People looking at their phones instead of where they were going was an issue they had discussed, and Debbie was sure he would tease her for almost colliding with him.

"My excuse is that I've just finished work and I'm in de-stressing mode," Debbie said with a giggle.

John often stopped to chat with Debbie. She worked in a coffee shop a few yards from his flat, and she found John's refusal to take the world seriously refreshing.

"My other excuse is that I've had hiccups most of the day and have been messaging my friends to moan. One of them sent me something they'd found online. I'm not entirely sure whether the forum post suggestion would work, but reading it made me laugh, which might help," Debbie explained.

"You can laugh at me all you like; I'm not easily offended, though you probably already know that," John replied honestly.

Debbie realised John's comment referred to her habit of 'over-sharing' in some of their brief conversations, though at least it meant he was, to a certain extent, prepared for her latest example.

"Apparently, according to the internet, a long, slow massage from a set of friendly fingers that find just the right spot is the most effective cure for hiccups known to womankind," Debbie explained.

"Bless the internet. Wouldn't it be wonderful if that were true?" John replied.

"Well, you only live over there, so I guess we'll find out soon," Debbie said, laughing and pointing towards John's flat.

Debbie knew John would be taken aback by what he'd heard, but she also understood that his love of the ridiculous was central to his personality. His lame puns had cheered her up many times, and she hoped he'd see it as a fun way to help a friend in need.

Once Debbie had followed John into his flat, she walked straight into his bedroom and took off her top, skirt, knickers and bra.

"The sooner we conduct our experiment, the sooner we can publish our findings online," Debbie announced.

After John had matched Debbie's state of undress, they climbed onto the bed, and John knelt between Debbie's splayed legs.

"Get rid of my hiccups, whatever it takes," Debbie demanded between bouts of laughter.

"Long and slow?" John asked, his index finger already sliding slowly and gently into Debbie's impatient body.

"In the name of research? Why not?" Debbie replied.

John drew slow, soft circles inside Debbie's body, prompting sighs of contentment. It was a chance to focus on something Debbie always felt would stand the test of time, and the early signs were encouraging.

Debbie found that the circumstances behind her unexpected treat brought her more pleasure than she had expected. She had only enjoyed John's cheeky humour before, but the nonsense at the heart of what they were sharing made him the ideal choice for this assignment.

"The experiment's going rather well from my perspective so far," Debbie summarised encouragingly.

As John continued to show commitment to his task, Debbie slipped deeper into a carefree state of increasing arousal. Listening to the sounds John's fingers made as they moved inside her body made Debbie giggle happily and gave her another chance to offer feedback.

"The jury's still out on the hiccup-cure theory, but I'll be too horny and wet to care soon," Debbie said dreamily.

"Don't worry, I'm happy to continue my thorough search for supporting evidence," John said reassuringly.

Debbie wasn't sure whether she was having an erotic experience that was funny, or a barrel of laughs that turned her on, but she decided the answer was irrelevant. What mattered was that she'd stumbled across an intoxicating mix, though she felt it was time to tweak things slightly.

"Fingertip searches are very effective, but I know the perfect place to tuck your thumb if it's getting in the way," Debbie giggled, gently guiding John's explorations.

"Rub it and tap it. It's not a lamp, so I can't promise a genie, but it won't bite," Debbie explained.

Once John's laughter at Debbie's comical guidance subsided, he followed her plan as closely as possible. Debbie had no idea whether John was a fast learner, whether she was an expert tutor, or whether both or neither were true, but she was as delighted as he was by the impact of his latest intervention.

"Don't stop or change anything," Debbie gasped.

John was thrilled to see and hear Debbie writhing and laughing her way towards climax. Her giggles grew louder, her body began to twitch, and all John had to do was keep behaving as Debbie had advised.

As her body burned with sensual energy, Debbie felt on the edge. When she crashed headlong into climax, she did so with a roar of laughter and a smile as much for John as for herself.

John continued to rub and thrust as Debbie enjoyed the sensations of the climax he'd helped ignite. It wasn't the most extreme, expert, or time-consuming release Debbie had experienced, but she knew she hadn't laughed, giggled, or smiled as much in a long time, if ever.

Once Debbie had savoured the aftermath of John's work, she spoke to him about issues she felt needed addressing.

"Firstly, and importantly, that was lovely, thank you. I could show my thanks in a fairly obvious way, but I'd like to save that for next time, assuming the idea of 'next time' appeals to you. It will be a day all about you, just as today's been mine.

"My hiccups? They seem to have stopped, but I'm not exactly sure how or when, as I was concentrating on other things. I guess we'll need to repeat everything soon in the interests of science."

John was delighted to hear Debbie speak so positively, and he made sure she knew he thought her plan sounded wonderful. Debbie thought her idea was one of her better ones, too.