Short form of the last part of the famous punchline "But that's not a Duck!" Saying "A Duck!" should always be followed by insane laughter for no perticular reason.
Also can be used as a random exclimation.
Bob and Jack are talking when Paul walks up. Bob suddenly yells "A duck!". Bob and Jack errupt in laughter. Paul is forced to laugh or admit he doesn't understand. It's great fun either way.
When your autocorrect feels the need to annoy you. Our phones are taking over our free will to speak.
Bob: I ducking hate Joe!
Bob: God Donut I meant ducking
Bob: I DUCKING HATE THIS STUPID PHONE!
Bob: *ducking
Bob: Duck this phone
Bob: I'm going to jump off a ducking cliff now
Fred:
A waterfowl.
But also, a funny person
T: I saw two ducks yesterday, they were stalking me through the window
H: I is a duck for sure
The usage of the DuckDuckGo search engine to look something up.
Tom: Dudes, have you heard how much google is spying on us?
Dick: I have heard something about it, but don’t know the details
Henry: Dude, Tom is right, you should duck it.
An aquatic bird that, in medieval times, was used to find out if a person was a witch or not.
This stems from the very logical idea that if a person weighs the same as a duck, then that person is made of wood (because both ducks and wood float in water). And since wood burns (just like witches) then that person must be a witch, because witches are made of wood.
Therefore, the accused person(s) would be placed on a scale next to a duck, and if they balanced, the person(s) would be burned.
So, if she weighs the same as a duck, then she's made of wood. And therefore... A WITCH!