dig your own grave
US /dɪɡ jʊər oʊn ɡreɪv/
UK /dɪɡ jʊər oʊn ɡreɪv/

1.
自掘坟墓, 自作自受
to do something that will cause you problems or failure in the future
:
•
If you keep lying to your boss, you're just going to dig your own grave.
如果你继续对老板撒谎,你只会自掘坟墓。
•
By refusing to compromise, the politician was digging his own grave with the voters.
通过拒绝妥协,这位政客正在自掘坟墓,失去选民的支持。