someone's blood is up

US /ˈsʌm.wʌnz blʌd ɪz ʌp/
UK /ˈsʌm.wʌnz blʌd ɪz ʌp/
"someone's blood is up" picture
1.

Blut in Wallung, sehr wütend sein

someone is very angry or excited

:
When he heard the news, his blood was up and he started shouting.
Als er die Nachricht hörte, war sein Blut in Wallung und er begann zu schreien.
Don't say anything to him now, his blood is really up.
Sag ihm jetzt nichts, sein Blut ist wirklich in Wallung.