野生火鸡是很聪敏的动物，但它们被人驯养的同类是为了给人提供肉，而不是提供智慧，因此如今的火鸡便以愚蠢而著称了——于是便有了这一俚语用法“你这只火鸡！”

The wild Turkey is a wily beast, but its domesticated Cousins have been bred for weight, not cleverness, and are now renowned for their stupidity - hence the slang usage "You Turkey!"

youdao

许多南方口语词都反映了该地区的农耕传统，而众多的南方俚语也都呈现出我们可以在动物身上联想到的形象或性格特点。

Many Southern colloquialisms reflect the agricultural heritage of the region, and so lots of Southern slang calls on images or personalities we associate with animals.

youdao