Bum man. Meaning you enjoy bumming other, random men. This word was invented by Phil Jones on a D of E expedition in Scotland. It was later used by his friend (person A) to insult him himself.
(Person A) 'Phil!'
(Person A) 'Your a bum man!'
Another example would be one person named Dave Middleton from Kendal, who was 'Date Raped'. Heehee! He went into a bar in Kendal, Cumbria, and ended up sleeping with a gay man! Ha! An he reckons he didn't enjoy it...