An INTP moment would be now. I just joined, clicked this thread, and skipped most of the posts
This.
Also, I was seriously contemplating killing my calculus teacher in college. EVERY time she would write a natural logarithm on the board she would call it a log. Same with normal logs. GRRRRRRRR.
Also I am a head in the cloud person. For example I was waiting in line at the store the other day and I happened to look up at the ceiling and within 30 seconds I had a wire-frame design of the ceiling in my head (with approximate dimensions and patterns they used for the placement of lights/security cameras) I had to stop myself from doing the whole store because it was my turn in line.
When I am at work I get bored. I did close to the same thing I did at the store but I went much more in-depth with force-distribution on the support beams. One time I spent 5 minutes analyzing the geometry of the nuclear symbol.
I am lazy/messy/disorganized/a procrastinator, I lose myself in Animes regularly, and I am very introverted. I'd rather spend an afternoon playing video games with my one or 2 buddies I normally play with than going to a party.
But the INTP-defining moment... or rather agonizing semester would have to be the natural log thing.