A person who wears ralph lauren polo shirts, tight khaki shorts, and drapes a creme sweater over their shoulders. Usually wears Timberland loafers, looking like a right cunt. Probably called Piers or Tarquin, or, if American, Chet, Todd, Ty or Reynolds.
'Hey look at that chap over there drinking the martini and pretending to be considerably richer than us'.
'Yeah - Boat Cunt.'