[SegfaultSeagull]

I majored in mathematics and remember encountering this theorem in a topology course. I giggled then, and 20 years later I giggle again.

[cool_dude85]

Much more niche than the hairy ball theorem is the Cox-Zucker Machine, supposedly they decided during the first year of undergrad that they eventually had to work together.

[xanderlewis]

In German it’s called the Hedgehog Theorem.

Clearly, what they say about Germans is true.

[gerdesj]

Ooh go on, what do they say about Germans?

I lived in West Germany for some years back in the day and I don't recall the locals being too shy. Frankly the Germans and the Dutch seemed to have had a rather more ribald sense of humour than the "oo err Missus" efforts we Brits fielded back then.

To be fair we could robustly swear on telly after 2100, provided it didn't involve too many rude bits and you could not misspell one variant of King Canute's name or Matron would be jolly upset.

Anyway, I'm pretty sure someone called this the "dog's arse" (it has to go somewhere!)

[fxwin]

Also known as the Combed Hedgehog Theorem (which i like a bit better)

[hinkley]

Have you considered a job in Defense? They love acronyms you can’t say out loud.