be after someone's blood
US /bi ˈæftər ˈsʌmˌwʌnz blʌd/
UK /bi ˈæftər ˈsʌmˌwʌnz blʌd/

1.
querer la sangre de alguien, estar muy enfadado con alguien
to be very angry with someone and want to punish them
:
•
After he crashed her car, she was really after his blood.
Después de que él chocara su coche, ella realmente quería su sangre.
•
The boss will be after your blood if you don't finish this report on time.
El jefe irá a por ti si no terminas este informe a tiempo.