He tried to convince her to take the job, but his advice was 'like water off a duck's back'. [=she completely ignored his advice]
She 'ducked out on' paying the bill for the meal. [=she avoided paying the bill in a sneaky or improper way]
She 'took to dancing like a duck (takes) to water'. [=she learned to dance very quickly and easily]
(..) This must've cost him a fortune. I can't believe it. Remember when he fell in love with Carol... ...and bought her that expensive crystal duck? What did you just say? Crystal duck. No, no, no. The "love" part? -Oh, my God! -Oh, no, no, no. (..)1995 TvShow: Friends Title: The One Where Rachel Finds Out Season: 1 Episode 24