HTFO is a cleaned up version of harden the fuck up referenced from an Australian man on Youtube. Perfect to use in a environment where elders or people who are easily offended.
Hey this hear is Jack, he drives a real fancy sports car but he doesn't know how to change the oil. Hey Jack why don't you htfo.
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Je zal emails ontvangen van email@example.com. We zullen je niet spammen.