I think there are people who need to be made fun of, and that's people who intentionally do something stupid like these crazy stunts on video, just to gain a few minutes of fame via YouTube or whatever site they use.

A guy in Australia put a firecracker in his buttcrack or his rectum (I'm not sure which) and lit it. Do I think he's an idiot? Yes. People often post what they call "nutshots," where guys intentionally let people kick, throw objects at, or otherwise risk harm to their genitals. Idiots? Yep. People who get hammered and get behind the wheel? Dangerous idiots.

I don't think everyone is an idiot for not knowing things...there are lots of things I'm not familiar with, having lived a very limited life. But I feel there are legitimate reasons for calling someone an idiot sometimes.