To be a 'bronno' or more commonly 'a derty bronno'.. is to be a chatty bastard.
Behaviour that is likely to trigger this particular insult includes picking and eating one's bogeys/earwax etc, eating or drinking something you 'found' on an empty table in a
pub, or any other foul activity that might be expected of a scally.
Can be used semi-affectionately amongst the sort of very close
friends who greet each other with a friendly 'alright
cunt, not seen you in fucking
time'.
Used in parts of North Nottingham.