Wrote some code that solved a program in a semi unique way for the codebase. As in not oft used functionality of language.

Some time later... This might be hard to understand. Maybe I should do a different way.

Some time later... No, I will leave a comment to describe what is going on.

Some time later... That comment is kind of cryptic. Maybe should rethink.

Some time later... No, if the next dev doesn't know how this works then they should learn how it works. (reasoning here is that the functionality requires a knowledge of internals of language)

Some time later... Also, if nobody else gets this then they have to ask me how it works. Job security?

Some time later... STOP THINKING ABOUT THIS CODE AND MOVE ON!