This Head Lice Infestation Is Unbelievable. Dude, what the hell?brThis video has grossed out more than 4 million people since it was uploaded to YouTube. It shows one of the worst cases of head lice in disturbingly high .brAn extreme infestation of head lice and eggs turns very ugly! Head lice can spread very easily so be careful! :P Because its difficult to get rid of head lice .