What were some of your "OH MY GOD I'M AN AWESOME CODE WIZARD!" moments?

For example, I can remember two or three:
One was when I, with only cursory knowledge of C, never having worked with it but having been exposed to it (and having lots of experience with C# therefore familiar with the c-family syntax), took 5 minute look at a source code and pointed out a bug that the student working on it was trying to solve for the past 2 hours. Sadly, I don't remember what the bug was anymore.

Second one was on reddit, someone posted to gamedev group a 2minute video from his voxel+ai framework he was working on, I watched it, and without any idea what it's written in, or how, I was like "you seem to be dropping frames in a pretty regular manner unrelated to anything I see happening on the screen. You're creating too much garbage on frame-by-frame basis (probably while your AI is exploring what to do), look into object pooling, it'll help".

And the guy responded in a few hours like "by gosh, you're right! thank you! and what do you think about the source code?" (he linked git repo below the video.

And I was like OMG I'M A MAGE, I DIDN'T EVEN CLICK THE REPO LINK, ONLY NOW AFTERWARDS, AND yeah, it's c++ so sadly nothing for me, but OMG I JUST WROTE THE FIRST THING THAT CAME TO MY MIND, DIDN'T EXPECT IT TO BE CORRECT, I'M AWESOME.

=D and the feeling stayed with me for about two days.

(If it's not clear yet, it's perfectly okay, in fact, required, to brag about yourself in answering this question ;) )