For a fair while now I have suffered from some kind of mental disability (commonly referred to as stupidity) whereby I simply forget to eat. It happens fairly regularly during the day when I'm working (especially at home). I'll be sitting there and I'll think "far out, I'm starving". Then I resolve to get some food as soon as I've finished whatever small task I'm doing at the time, and then promptly forget. This can go on and on until I have missed a meal altogether.
This disability reached new levels today. I forgot to eat breakfast and didn't realise until well after I was sitting at my desk at work.