What’s the weirdest thing that your brain has decided to remember forever?

The code for 30 lives in Contra on NES. The game genie code on NES for infinite gold in the first Final Fantasy.

These old time song lyrics my mother used to sing to me:

Mairzy doats and dozy doats and liddle lamzy divey
A kiddley divey too, wouldn't you?

How to start a CA tractor.

I’m not sure, I’ll let you know when I remember if