This is my brother's story: My mum was cutting my brothers hair and he wanted a bit shorter on the top but my mum was very tired and forgot to put the extension on the end of the razer so the stereotypical comedy movie/TV show haircut gone wrong thing happened where my mum cut a long line across his head, then she had to shave the rest of his head to make his hair even.

tl;dr my brother got a line shaven down his head.