There are probably no people in the world who would dare put a light bulb in their mouth. As practice shows, a light bulb easily slips into the mouth. But only medics can take it out later on. Still one guy wanted to prove that there was a way to go without a trip to the hospital. We do not know why he did this and who he wished to impress. But here is an instruction on how to remove a light bulb from your mouth.

How the river can have five distinctive colors.