In your career, you will inevitably end up saying some dumb or regrettable things to your boss. We all do it to varying degrees at one time or another. The following list of such things is by no means exhaustive, but if you can avoid saying them, you will be doing yourself, your professional persona and your boss a tremendous service.

“Impossible; that can't be done.”

This is just the kind of short-sighted thinking no boss wants to hear about. It suggests both a lack of effort and indifference. So, unless you follow it up with a solution or an alternative, it’s not terribly proactive or even helpful to say such a thing.

“This is the best they could do, huh?”

Whether said in response to new office phones, computers or the banquet hall at a family-style restaurant rented for a Christmas party, this is one of those smart-ass comments that indicate to your boss, and to others, that you have a deluded sense of entitlement. It also belittles the efforts someone -- possibly your boss or even his boss -- has made.

“Not my problem.”

Be that as it may, this presupposes the existence of a problem and, more than likely, a frustrated boss or coworker in need of some assistance. At the very least, your boss is looking for someone to take responsibility of the solution to this problem -- even if it wasn't yours to begin with. That means he already knows it’s not your problem, so you can spare him the reminder.

"That isn't in my job description.”

A lot of things aren't detailed in your job description, including e-mailing your friends from work or surfing the web, but you probably do those things anyways, right? So when the boss asks you to do something a little out of the ordinary don't take offense and never say to your boss that it's not in your job description to do it.

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