鴨かもが葱ねぎを背負しょって来くる

expression, kuru verb (irregular)

a perfect setup; a golden opportunity; a sucker begging to be taken

Idiomatic expression describing a situation where everything is conveniently arranged for one's benefit, often at someone else's expense. The literal image is a duck (good for eating) carrying a Welsh onion (a seasoning for duck) on its back, i.e., a ready-made duck dish walking right up to you. Used humorously or cynically.

See also: 鴨鍋

• あいつが大たい金きんを持もってるなんて、鴨かもが葱ねぎを背し負ょって来くるような話はなしだ。

  Him carrying a lot of cash is like a duck coming to you with a leek on its back—a perfect setup.

• こんな好こう条じょう件けんの仕し事ごとが転ころがり込こむなんて、まさに鴨かもが葱ねぎを背し負ょって来くるだ。

  A job offer this good falling into my lap—it's exactly like a duck bringing its own garnish.