I just found a fairly sizeable bug in some relatively paths of code we use hundreds of times a day, which I last touched 6 years ago. Like, "major features just plain don't work" bug, but we didn't notice because we never use those features. They presumably used to work but I have NFI when I broke them.
I am reliably informed that past me thinks present me is also a real fucking jerk and what was I expecting treating him like that, so fair play I guess.
Past me is a real fucking jerk.