spittin' blood
An expression of irrational anger, used to convey that an individual has reached the boiling point, but usually misinterpreted as a severe physical disorder.
Mike: I don't feel as though your team is connected with the project.
Howard: How can you say that to me?! I'm so pissed over here, I'm spittin' blood! Pew, plah, plaaaaaah!!
Mike: Should I call a doctor?
Howard: How can you say that to me?! I'm so pissed over here, I'm spittin' blood! Pew, plah, plaaaaaah!!
Mike: Should I call a doctor?