I do some underwear (jockstraps, thongs, etc) self-posing elsewhere in Mastodon under a different account name. Started doing that because I feel I have a rather photogenic fanny, and wondered if others would think that as well. And it's not the sort of thing you can easily ask in the Real World without coming off weird. Internet allows some control in how you present yourself though.
I suppose that's a somewhat vain answer but positive reinforcement from what I have shared is a hell of a high. 😉