You can't duck your head and deliver a forcible blow with your helmet.

WSJ: NFL could eliminate tuck rule

Hong Sa Duck, head of the GNP's campaign committee, tells people in the lower-income area of Eunpyong that they should not believe what President Kim Dae Jung says.

CNN: Evaluating Kim

Bend your knees and duck down, rolling your head in a 'U'shape under the punch from 'inside' to 'out.

BBC: DEFENCE

That would leave a brief lame-duck session after the elections as the only opportunity to head off the cuts before they take effect, and nobody is counting on that happening.

FORBES: Connect

"The head of the household came in, and she asked me if I like duck, " he recalls.

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