Politicians behave similarly to high school children when in Parliament. Indeed, the example I am linking to is at the upper end of the scale – no-one was punching anyone else in it, for starters.
I didn’t actually know that these supposed adults acted like this until I was a teenager and actually saw footage of them openly mocking and heckling each other as they tried to speak in session.
Can someone with more political experience than I explain why this is acceptable? If I had employees who constantly acted like this during meetings, I would sack them with no regrets.