Thanks NSC i knew i could count on you. It's the people I work with obvs, but what also worried me was that a barman at my local didn't know what it was either - he was about 21 so probably his age, but nevertheless....
Had an argument at work where no one has heard of the phrase "can you put a pint in the bin for <insert name here> he/she's running late".
Over to NSC to see if this is just me :(