Very rarely has he ever gotten mad. But that bit of a nutcase made my egg donor look like a tea party. Even i'm still haunted by that time, given i have never seen my dad cry. Later he admitted the start of the situation was his fault.
Thats a long story of shit to get into. And as i said, my dad is not perfect so he's not always a chad, but that wasn't him at that time. That was a demon who possessed him.