Actually, the common slang you wanted was "a kick in the ass" or less vulgarly "a kick in the seat of the pants", as in this book's title, http://www.amazon.com

Actually, the common slang you wanted was "a kick in the ass" or less vulgarly "a kick in the seat of the pants", as in this book's title, http://www.amazon.com/dp/0060155280 http://www.amazon.com/dp/0060155280 . An "ass kicking" is slang for a beating.