Why can't you just look things up on the internet ?
The whole conversation can be found online within seconds .
"As revealed in the actual transcript (shared by TIME), Charles told Camilla he wished he could live in her "trousers," so as to be close to her at all times. She retorted that the prince could be reincarnated as "a pair of knickers," to which he joked that, knowing his "luck," he'd end up as a tampon instead."
https://www.harpersbazaar.com/culture/film-tv/a41913184/tampongate-true-story-the-crown-season-5/