The Earth Kingdom Way
From the moment Haru hit puberty, his mother worried for him. Her son was so pretty, had such a fondness for handling rock hard balls, and was so utterly rapeable. He had shown a passing interesting in a water tribe girl, which had relieved her mind of one worry, but no sooner did he start making himself even prettier to attract her interest than she was gone.
But little did she realise that Haru had promised himself that he would save his virtue for marriage (to Katara), and that he would become the strongest earth bender in the entire kingdom (for Katara) as well as become the most handsome man in the world (with Katara).
In fact his obsession with Katara was a wee bit creepy, but that is another story, for another time.
Haru's father, on the other hand, was not the nice, kind leader like man everyone thought he knew: in fact his front of caring for the elderly, personal sacrifice for the betterment of others, and enduring patience was all just a front! Yes, Haru's father was a wicked, evil man who wanted his son's prettiness all for himself.
And so, in the grand tradition of men everywhere, he decided the best way to make his son love him was to rape him.
"Haru…" his father said, putting his hands on Haru's shoulders in a creepy manner. "It's time you became a man. My man."
"W-what are you saying?" Haru said, his eyes taking on that haunted and ukey look that made the Earth Kingdom troops take him back to their lair. Haru's father turned on the charm that had snagged him Haru's mother, and leant forward to whisper:
"Your virgin ass is mine, son."
"Father, no! I must keep myself pure for my bride-to-be!" Haru cried. But his father did not stop, instead he only got naked. Haru looked down and saw his father was already, if you will pardon the pun, rock hard.
So he did what came naturally: he reached out his hand, and crushed his father's balls into fine dust.
After that, everyone in the village agreed that no matter how rapeable Haru looked, no male was ever going to get even slightly naked near him.