"Piss on your grave" is what you tell someone when you greatly resent something they have said or done, assuring them that you will not forget it and have no respect for them.
"If you dare do that, I'll piss on your grave!"
49👍 2👎
From Travi$ Scott's 2015 album 'Rodeo':
When you use someone's face as a urinal,
Then do the same at their funeral,
Piss on their grave
I USE YOUR FACE AS THE URINAL
THEN DO THE SAME AT YOUT FUNERAL
PISS ON YOUR GRAVE
PISS ON YOUR GRAVE