I've had a few people ask me about it, and I usually get as far as "So in Star Trek, there's this alien race called the Ferengi where the women aren't allowed..." before their eyes glaze over and I see them dismissing it as some nerd thing.
[Image description: a sticker depicting Ishka from DS9 rolling up her sleeve in the classic Rosie the Riveter pose, with a speech bubble saying "The Future is Fe-male."]
You need to immediately mention how women aren't allowed to wear clothing on Ferengenar without even saying Star Trek; that'll get their attention.
Which makes this sticker even more risque