Stormy Weather(men)

Here are a few rules to live by in the world of business:

Don't mention wrongdoing in an email.

Don't fool around with subordinates.

Remember the cover-up is always worse than the crime.

Don't grab two beers and unleash the emergency chute. You could kill someone.

If you were nice to people on the way up, stay nice once you've reached the top. You'll last longer.

Finally, to any CEO or analyst coming on CNBC, or any aspiring anchor or reporter, there's this: if you're wearing a microphone or standing in front of a camera, assume you are on the air. You'll never get in trouble. (See "Carly Fiorina versus Barbara Boxer's hair".)

This particular rule was violated Tuesday by BBC weatherman Tomasz Schafernaker after anchorman Simon McKoy gently mocked him. Warning--the video involves the brief image of a certain finger on the weatherman's hand.

According to NewsLite, a BBC spokesperson said the weatherman "was not aware that he was on air, and whilst the gesture was only shown for a second, it was not acceptable...we apologise for any offence caused." (Bonus points for using the word "whilst" and including words the Brits spell differently than we do.)

Was it funny? Yes, and the sin was not egregious enough to merit dismissal. But now weatherman Tomasz Schafernaker will be known for more than his difficult name. Do you really want to be remembered as the guy who gave the finger on TV? Probably not. So just behave. It's only for a few minutes.

Questions? Comments? Funny Stories? Email funnybusiness@cnbc.com