WordNet
kick in the butt
n. punishment inflicted by kicking the victim in the behind
Usage examples of "kick in the butt".
One false move and Silent would give him a kick in the butt and a chance to see if he could fly.
She still made no sound when Johnnie gave her a vigorous kick in the butt.
But as Daddy used to say, it beats a kick in the butt with a frozen boot.
Second best in the entire world is nothing to feel badly about and all those armchair athletes who sneer at second deserve a good swift kick in the butt.