I've been looking for a video for a while, it was on pornhub before the purge. It was titled Japanese tickle contest or something close to it. The video had to Japanese women next to each other, one in a purple dress one in a pink top, and they were to tickled until they said a safe word. One the safe word was said they'd lose some clothing and the tickling would start again. Once one said the safe word three times they lost.