There are only 4 possible words in the English language you could have been trying to write: "duck, deck, dock" and "dick." Being that dock and deck are generally outside the vocabulary of a 6-year-old, we can narrow the correct word down to "duck." Way off, dumbass.
Here's an easy way to remember the difference: a duck migrates down south when it's cold. A dick migrates down south when it's hot. This should be hanging in every pre-school in the world.