... on their tongues? Yeah, I know ... man, do I know.
Hey, not for nothin' but the term common sense means that lots of people have it. Your use of the term to justify not using anti virus protection has me convinced that one of us ain't got a real firm grasp of the English language. By definition common sense indicates that anti virus protection is a required item ... hence, it is commonly used. I think the term you are looking for is 'blind faith'.
As in:
Q: "What do you use for anti-virus protection?"
A: "Nothing / Blind Faith." (not 'common sense')
I just didn't want that other thread to become polluted with my being appalled at your endorsement of this craziness and bashing of AVG.