The phrase "to dip the balls" is a colloquial expression that refers to somebody behaving in a cowardly or submissive manner.
Sentences with «to dip the balls»
Working with 1 at a time, dip balls into melted butter, then roll in cinnamon sugar and place in pie plate. (marthastewart.com)
I was able to use the stick to easily dip each ball in chocolate and roll in graham cracker crumbs quickly before the chocolate cooled. (epicurious.com)
Gently dip the ball in the chocolate, turning it to coat completely. (acalculatedwhisk.com)