Inverses
A function f and its inverse f⁻¹ bicker; f⁻¹ keeps reversing f's sentences.
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Cartoon by Ben Orlin, Math with Bad Drawings. https://cartoons.mathwithbaddrawings.com/2017-11-14-inverses/ (CC BY-NC 4.0)Transcript
f: "Ugh. You always contradict and reverse everything I say, right after I say it."
f⁻¹: "Or perhaps it's you who undo what I say, right before I say it."
f: "Stop it! That doesn't make any sense! You're always talking nonsense!"
f⁻¹: "Or perhaps it's nonsense that's always talking you."
f: "I hate your smug face." f⁻¹: "I face your gums' hate."