What is Nostalgebra?
1.
The feeling of sadness-tinged regret you feel when you recall that you used to be able to do math.
A: I can't believe I don't remember how to differentiate this equation. I used to be good at math.
B: Ah, the rose-colored glasses of nostalgebra
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An infinite (and ironic) loop, as originally observed by the webcomic XKCD (#140), where having leftovers of one nacho ingredient encour..
