r/todayilearned 12h ago

TIL In 2019 a Japanese University student studying ninja history turned in an essay written in invisible ink. The words only became visible when the paper was heated over a gas stove. Her professor without even revealing the whole essay gave her an A.

https://www.bbc.com/news/world-asia-49996166
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u/NuancedFlow 8h ago

Very few racial slurs is a funny concept. It's either zero or too many for me.

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u/TheHYPO 6h ago

I guess that's why the joke was amusing.

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u/spookygraybaby 6h ago

Wow. Pretty powerful stuff.