I'm missing a little section of the brain region that controls our ability to experience time chronologically (white little blob on the picture), which is the reason why I'm always late and don't even care, and, curiously, also for my inability to see the colour green.
Well, technically the brain cells are still there, only they're a withered shrunken mess and no good.
There are two explanations: It's either a genetic dysfunction passed on by both parents or was caused by my mum doing shots of liquid plumber during pregnancy. I don't judge her. It was the 80ies.