Zdobyslaw Kosinski
Zdobyslaw Kosinski voted up Didge Doo's answer

Well, there was maybe just this one time...

I was working for a Japanese company and stuffed up. The boss came to see me and said, "If you ever do this again I will bring a ceremonial knife into this office and watch you ritually disembowel yourself."

Seemed like a pretty big deal to me.