Horrible Video: The Worst Head Lice in the World A toe-curling video showing a mans hairline crawling with .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 .brAs head lice infestations go, this is probably one of the worst weve ever seen. The video – shot in close up so we can all get a nice, grim look at the bugs .brThe worst head lice video in the world (we have warned you!) A video seen over a million times online shows a man with a really bad case of head lice (and .