balls
1. n-the soft parts of a man where sperm is produced
2. n-the soft parts of ourselves, that make us vulnerable or insecure
1. Don't kick someone in the balls, it's not nice.
2. Smaug tried desperately to conceal his balls--the soft spot on his left breast unprotected by his scales.
2, alt. To keep anyone from noticing that his knowledge set was full of balls, Mike was always blustering and boasting.