If people don't duck their heads the spead of the blades can cut their head off.
Duck and Cover.
NO
just get pliers and a duck and rip
The warnings such as "Heads up" ("Fore" in golf) do not mean duck, although you and others might do so. The announcement means that you see something happening that others should "look up" and be aware of it as well. Once you see the threat, you can decide whether to duck or take some other action. If you don't immediately see anything, ducking is the action most people take.Similarly, the idiomatic noun "heads-up" means a warning about a situation that another person may not be aware of, e.g. Joe gave me a heads-up on the office reorganization.
In warfare a helicopter is like a sitting duck. The jets will just blow the crap out of 'em cause an air-to-air missle is faster, way faster than a helicopter.
3/28/12
August 18th
White ducks with red heads have a distinguishing feature of their unique color combination, which sets them apart from other duck breeds.
It is very possible that the water ripples when a duck farts, because the water ripples when a human farts. The air coming out of the duck would make a ripple in the water.
very carefully
Many birds sleep with their heads twisted into awkward-looking positions. While a person wouldn't be able to sleep that way, for a duck it is natural and is comfortable.
people, as you so call them prefer to live in the duck moo because they love the fact that their cows have inbred with their ducks. DUCK-MOO