Disclaimer: I do not own the characters. The Terrific Travelling Thong concept was elaborated in collaboration with fellow author thandi (waves at thandi).
Miyako looked at the small piece of clothing in her hand. It had been months since she'd last seen it, but after a perfect circular travelling, it was finally back to her.
It had somehow ended at Jou's a while ago and had caused quite the drama when the poor young man had seen it the next morning and snorted tea up his nose and all over his biochemistry textbook. Far too embarrassed to do anything about it, he had asked Mimi to give it back to its righteous owner.
The following week, the girl was at Koushirou's and an unfortunate rug caused her to trip and spread the content of her purse across the living room's floor. Two days later, the strange garment was located by Tentomon and Koushirou while Yamato happened to be over.
The blonde offered to take the piece of clothing in custody, arguing it would be greatly useful to leave it laying by the apartment in order to scare the overly clingy fangirls. After a while, he eventually decided to play a prank on Taichi by stuffing it in his coat's pockets while the other boy wasn't looking.
Two weeks later (because, like any good young man, Taichi rarely, if ever upturned his coat pockets), the underwears reappeared in the middle of a date with Sora. It almost caused the pair to break up. Almost. Taichi somehow managed to convince the girl the thong was his sister's.
Sora, not a complete idiot, insisted to give it back to Hikari herself. The girl, having been warned of the incident, did tell Sora it was hers, and the ensuing discussion about fabrics and colours is not fit to be repeated here.
However, it should be noted that, by this times, the digimon were all very well aware of the fate of the Terrific Traveling Thong, and Hawkmon had organized a betting pool as to who would end with them next. No money was being wagered, though. Only consumables.
And now back to our scheduled telling.
Hikari, having heard from Mimi about the story, asked Takeru if he could give them back to their rightful owner, as the boy lived only a few floors away from the purple-haired girl. The task, however, proved to be more complex as he went to Ken's, where the two lovebirds were having a (yeah right!) "study session". Once there, he was told the two had went out, but should be back within the hour, and so left the package to the attention of the couple.
Following an unfortunate spat, however, Ken could only come home alone to find the unexpected leftover that had to be carried over to Miyako. Knowing it would take a while to mend the girl's bruised ego, he asked Daisuke when he came to visit the next week, if he could get it at least back into the building.
Daisuke happily agreed to an occasion for him to lend his hands on such perfect blackmail material. He had to somehow get back at the girl who constantly threatened to "accidentally" reveal he was always carrying a pack on condoms with himself. And so he brought it with him... And promptly lost the underwear amongst the endless pile of junk that made his floor an archeological curiosity, and only eventually recovered them several weeks later. At the time, his family was going to visit an aunt and his parents had forced him to clean the place. Fed up with the entire thing, Daisuke, without any time to do the job himself, asked Iori to do it.
Being the level-headed, reliable boy he was, Iori did not dare ask any questions and simply walked from a floor to the next, only to find himself greeted by Miyako and a full set of partner digimon cheering after him for reasons he would never quite fully understand.
That night, Miyako slept well, now that she knew the next day's date with Ken would go perfectly well now that her lucky underwear had come back.