In my first job they used to take me to a lot of meetings. This was a novelty as they'd never taken an art director to meetings before, it was always the CD or the deputy CD.
They took me for two reasons; firstly I can pronounce most words properly and secondly they had a bit of an image problem and wanted to show off the youngest member of staff. My role in these meetings was to sit there and say nothing.
Time after time I found myself listening to utter rubbish and wanting to blurt out, "but why don't you" or "you ought to do it like" but never saying anything. Almost every time someone would say what I was thinking and the assembled marketing brains would nod in approval. How I wished I'd spoken up.
So, if you're thinking something in a meeting - say it. Chances are everyone else is thinking it too.