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Math Help Center: Where Klein Bottles REALLY Come From
FFfffssshhhhhoooooop! That's the sound it makes.
One thing that I actually really value about math education in high school is that the teachers generally a sense of humour about what they do, as lame and discipline-specific as that humour might be.
Still, in the small sample space of people I know who are studying for mathematics degrees, hilarity is very common!