on your (own) head be it
成語所屬單字head
on your (own) head be it — 慣用語
1. used to warn someone that they alone will be responsible for any bad consequence
1.慣用語
釋義
後果自負；責任自擔
used to warn someone that they alone will be responsible for any bad consequences resulting from their decision or action
例句
If you want to quit college and travel the world, on your own head be it.