It's just a bit of harmless fun, boys like to play, and if you don't want to show your badge, leave it in the closet, one day, your great grandchildren may well discover it and you can start the story "when I was young......" or it may even become a collectors piece, in the meantime, it could well be an item of fun at a PPRuNe bash!
It's just a bit of fun for heavens sake!