A longman is typically an individual who chooses to elongate a particular task for the purposes of irritation or general ignorance of surroundings. This keeps with a
popular emerging
British tradition to add man or similar as a suffix to a regular verb to form a compound word such as 'fuckboy, wasteman,
roadman'.
In Lehman's terms a longman is a man/women who takes overly long at any given situation with total disregard for responsibility.
'Longman'
Luke: Sup man we still meeting for 9 later?
Jack: We said 7 mate , me and
James are already heading to the pub
Luke: Sorry mate Im just chilling at the moment i cant get a lift until later
Jack: Stop being a 'longman' and walk you lazy ball bag