Is a gun guy who keeps his guns properly secured responsible for some knucklehead who doesn't?

WSJ: Why Our Gun Debate Is Off Target

But, according to Posnanski, he realized that he needed Sandusky that the emotional, bear-hugging, impulsive knucklehead was a necessary counterpart to his own discipline and austerity.

NEWYORKER: In Plain View

What could be better, for his purposes, than a boss with eyes only for the football field, who dismissed him as an exasperating, impulsive knucklehead?

NEWYORKER: In Plain View

What knucklehead came up with the stupid idea anyway?

FORBES: 7 Tips To Help You Stay On Track

The timing for a primed, pumped, itchy-trigger-finger shoot-em-up leaves something to be desired, no doubt, but with Nicolas Cage unaccountably AWOL this January, Arnie has the knucklehead R-rated action field pretty much to himself.

CNN: STORY HIGHLIGHTS

MRS. OBAMA: That knucklehead -- slap him in the back of the head. (Laughter.) Find that one friend, that one colleague, that one person -- we've all got that one person.

WHITEHOUSE: Remarks by the First Lady at a Campaign Event