Overestimating tasks

Do you guys ever plan in a few hours to adjust something in software you wrote, and you literally fix it within a few minutes without testing in between or looking on Stack Overflow?

Yes, and the best feeling is undereestimating a task

I used to, which is why I started adding simple debug output to my code which I can enable specifically for the function that is involved with the problem. The worst problems are the ones that fail silently, but with properly placed debug output you can run the program/script and see where it shits itself then go there and look real close.

No, never. It's always the other way around (for me). I can only assume the rest of you are lying.