milk a duck

milking a duck

An impossible task. Used in comparisons to tasks or activities that are or seem to be impossible. Trying to get a straight answer out of this candidate is proving harder than milking a duck.
See also: duck, milk
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

milk a duck

tv. to do [or not do] something totally impossible. She can’t do that. That’s harder than milking a duck.
See also: duck, milk
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.
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