Why Do Python Programmers Wear Glasses?

The punchline works on two levels of programming dad jokes. Python programmers "can't C#" (can't see sharp) because they need glasses, but also because they code in Python instead of C#. It's the programming equivalent of that joke your uncle tells at every family gathering – ancient, predictable, yet somehow still gets a reluctant chuckle from the room. Just like documentation from 2008 that somehow still works.