Definition
Used to express a decision to do something despite knowing it might be wrong or ill-advised, often indicating a sense of recklessness or indifference.
管他呢！
I know I shouldn't eat so much sweets, but what the heck, I'm going to indulge myself today.
我知道我不該吃這麼多甜食，但管他的，我今天要放縱一下。
The boss said I couldn't take any more time off, but what the heck, I'm going on vacation anyway.
老闆說我不能再多請假了，但管他的，我還是要去度假。
This dress is a little expensive, but what the heck, I really like it.
這件裙子有點貴，但管他的，我真的很喜歡。