Duck is a very lame, boring, easy, or useless thing. It's mostly used as an insult, or to say a person isn't very cool or nice.
Hero is an interesting, yet difficult thing. It's used to say something or someone is really cool, nice, or poular
Duck to Hero is a term used as a scale measurement. It would be used to compare things.
"On a scale of Duck to Hero, how hard do you think the test was?"
"That swim practice was really Hero, we had to swim a 200 butterfly."
"She's such a Duck! She didn't know what -9+-7 was!"
OMG! Suzy is such a Hero! She is like, the coolest girl in the grade!"
A shot of vodka, drunk from a child size glass featuring pictures of ducks.
I had three ducks last night, but I felt fine so I filled another to the feet.
Michael drank a duck to the feet, but his tolerance is low, so he is sodden to the gills.
12 step recovery jargon referring to someone new who talks about how great life is, now that they'resober. Usually meaning that the person is out of touch with reality.
The new guy seems pretty happy for a dude who has no job, no money and no family. He must be on a pink cloud.