Of Celtic origin, a phrase meaning an affectionate kiss or pat on the ear or cheek. Popularized by the Scottish band "The Waterboys" in their song of the same name.
"You to me are treasure, you to me are dear. So I'll give you my love, and a bang on the ear" - The Waterboys
by garbo215 February 1, 2010
Get the bang on the earmug.