what the heck!
成語所屬單字heck
what the heck! — 慣用語
1. Said when someone decides to do something they know they probably should not do,
1.慣用語
釋義
算了；管他的
Said when someone decides to do something they know they probably should not do, often giving in to impulse or temptation.
例句
Gabriel looked at the price, shrugged, and said what the heck before buying it.
I should not eat dessert this late, but what the heck — life is short.