Definition
This idiom is used to indicate that if someone experiences negative consequences as a result of their actions, they alone are responsible and no one else.
自作自受！
"I warned you not to eat at that restaurant, but you went anyway. Well, that's your funeral!"
「我警告过你不要去那家餐厅吃饭，但你还是去了。好吧，那是你的葬礼！」
"If you insist on taking the exam without studying, failing it will be your funeral!"
「如果你坚持不学习就去参加考试，不及格就是你的葬礼！」
Alright, if you decide not to listen to my advice, then the outcome is your funeral.
好吧，如果你决定不听我的建议，那么结果就是你的葬礼。