Noun: A doe-eyed fool; a pollyanna-ish innocent; an overly-optimistic simpleton. Someone who wants to make the world oh-so-safe for everyone, i.e., if we are very, very careful, nothing bad (or good) will ever happen to anyone.
The blissninnies of the left (like any blissninny) want to ban all firearms, so that only the criminals will have them.
To be quiet and observant but when it comes to the test can be very dangerousfor the people who tries them. They take nobody’s Bs but very nice at the same time.