a coin purse
A coin purse is where a man keeps his testicles. It's also where you put your loose change when you're too lazy to put it in your pocket.
My dad's coin purse got hit by a car. He said, 'I lost my nuts and my change!'
My brother's coin purse was so dirty, he called it 'the trash can of manhood.'
My cousin's coin purse got stuck in a sock. He screamed like it was a horror movie.