A very large penis. Usually referred to when describing the penis as being so massive in size and girth that all it's good for is slapping up against a womans body parts, most often their jugs.
When Jason went on his blind date he had no idea that the woman he was with had a particular fondness for a man with a jug bat. He was pleasantly surprised when the woman requested a little jug slapping.
by mdlaclover May 14, 2010