It's as good as a chocolate teapot ：Something that is completely useless.花里胡哨中看不中用；完全没有用的人们都知道巧克力遇到高温就会融化。
所以，如果茶壶是用巧克力做的，那是不能用的。
但是，巧克力看上去又特别好看。
所以，在俚语中，把这句话引申为"花里胡哨中看不中用；完全没有用的"。
This course is as good as a chocolate teapot, so I want to quit next semester.这门课程中看不中用，下学期我想放弃学习这门课程。
He doesn’t like reading Kung fu novels, because he thinks they are as good as a chocolate tea.他不喜欢武侠小说，因为他认为武侠小说花里胡哨中看不中用。
Your plan is as good as a chocolate teapot.你的想法根本就花里胡哨，真的很无用。
Your plan is as good as a chocolate teapot.你的方案一点用没有。
I'm not taking your advice again, which was as good as a chocolate teapot.我不会再接受你的建议了，那简直没有一点用。