Ass Plunderer Share definition Flag One who proceeds to ram various objects up another's arsehole, usually repeating such words as 'Arrrrgh, me hearties' and 'Shiver me timbers' Faheem Ayub, the most vicious ass plunderer to sail the seven seas See also 'Captain Pugwash' Ass Plunderer by Evil Rowden May 16, 2003 Get the Ass Plunderer mug.