I guess they say it, because if a person has to ask them what they are talking about then you might look like you don’t have any common sense. LOL
Barry uses it a lot to as in
We need common sense gun regulations.
“Let’s meet our responsibility to the citizens who sent us here. Let’s try common sense.
“In the coming weeks, the President will continue to work closely with Chairman Dodd and others to craft a strong, comprehensive financial reform bill that puts in place common sense rules of the road and robust safeguards for the benefit of consumers, closes loopholes, and ends the mentality of Too Big to Fail.