Good questions

Suggested questions and comments

If you don't want to say this out loud,	try this instead.
I'm too embarassed to ask, because I should know this.	Could you remind me...
I'm lost.	I'm not sure I'm convinced.
Who cares?	What is the significance of...
You did that wrong.	Are you sure you meant...
What the Hell are you talking about?	Could you please repeat the main points?
That doesn't anwser my question.	That's very interesting. (Rephrase question.)