I’m reading Confusion by Elizabeth Jane Howard, which is set during WW2, and was puzzled by the abbreviation ‘BBs’ in a scene where one of the characters is thinking about the usual shopping list she would have for a trip to to London - the line is ‘BBs for Clary and Polly’ who are teenage girls.
Google hasn’t helped as I’ve just got results for Bulletin Board Services (know as BBS) or the BBC. I’m assuming it’s something underwear or toiletry related, but can’t figure it out! Does anyone have any idea what it could stand for?