An expression used to describe a camp, narcissistic, eccentric, quirkychap/individual or member of the establishment in satirical humour or derogatory fashion.
Nigel: “How’s the new bloke?”
Damian: “He’s a very Rum Old Boy!”, **laughs
Nickname given to bales of marijuana thrown overboard or out of airplanes. Origin is reportedly from members of the US Coast Guard in the area of Southern Florida.