Tim Tebow, the Florida Gators (later New York Jets) quarterback tended to get excited when on the Gators sideline and in the locker room. Even when he's low key, he can give a hot blooded speech!
"I'm sorry. I'm extremely sorry. We were hoping for an undefeated season. That was my goal, something Florida's never done here. But I promise you one thing: a lot of good will come out of this. You have never seen any player in the entire country play as hard as I will play the rest of this season and you'll never see someone push the rest of the team as hard as I will push everybody the rest of this season, and you'll never see a team play harder than we will the rest of this season. God Bless."
And people playing Mario Kart. They can get pretty loud.
Not just Mario Kart, almost ANY driving game.
Even people playing dance simulators can get pretty hot blooded at times. They particularly love to sing the lyrics of the songs they're dancing to and make all kinds of fancy pirouettes if the game mechanics allow them.
Steve Ballmer. Only one with truly burning blood can throw chairs while screaming "I'm going to fucking kill Google!"
Much like depicted in the TV series Rome, Marcus Antonius (Mark Antony), the distant relative and legate of Caesar, was as hot blooded as they come. As Cicero characterized his rhetoric: "Mark Antony was vomiting words in his usual fashion." It was well known that he couldn't control himself the least bit.
European knights were well-known for the impetuosity in combat. They believed the only true combat lay in head to head confrontations with other fellow knights and did everything they possibly could to get to grips with their opponents, sometimes charging roughshod over their own hapless infantry in their eagerness to fight. Subverted often by any enemy with a cool enough head to either stand their ground and loose arrows, or who would simply run away before counterattacking the worn out knights.
Aristotle proposed a cause of the emotion anger was actually the boiling of blood around the heart.