half-dressed in the mirror (meme)
aka "Business in the front, party in the back".
A meme of a person wearing what appears to be a suit, but a mirror reveals the outfit to be (somewhat improbably) backless to reveal lingerie.
https://memepedia.ru/kostyum-s-podvohom/
Original: https://www.reddit.com/r/OldSchoolCool/comments/8m04z5/my_favourite_picture_of_my_dad_when_living_in/?st=JHQ568J0&sh=6f3381b9
This tag automatically adds meme (learn more).