In a very important customers case I wrote a SQL query that was flawless that I simply forgot to press enter to execute. Fortunately for me, assisting engineer that knows my pecularities hit the enter button after I left the keyboard. Just forgot to press enter. He covered my ass.
I have been standing and trying to understand other kids ability to learn how to swim, and after some watching, I just swimmed 200m to the teachers astonishment. Then I forgot how to do it again, and almost drowned because I got distracted.
I've walked two weeks to my work with a broken foot bone. When I decided it probably was something wrong, they threw me into a complete emergency procedure of Xrays, and then ended up with a plaster up to the knee in intensive care fashion, the amount of pain that bone should render normaly is intense, I just felt uncomfortable. I got a team of about 8 people taking care of me.
When taking my drivers license I took about one lesson, and almost killed myself for a engine stop. It wasn't anything dangerous, but I just couldn't stand having a engine stop in a car I wasn't familiar with on exams day. I've been driving since the age of 12. The only accident by the way I've ever caused with 19 years of driving license is a mistake when going to the hospital and got a epileptic attack, and smashed two cars. I was going there because of a quite serious head injury, later diagnosed to be the cause of the EP. I felt like s**t, went to the police even, to ask if it would make a recall of my license. They just stared at me and looked at me as I was a idiot, and explained that it was an emergency medical condition.
I'm one of the few people around here doing SMD repairs. Once when working, I didn't do my double-check of soldering and I completely fried a motherboard. My boss didn't even count it as a issue, but for me it was personal failure that realy hurt my spirits. I forgot something I've been doing since ice-age!