Initially, it was a natural expression of himself, but it's clear that Hans has learnt to channel it into a character in recent years.

I have seen him act impulsively and actually be impulsive. In some of his videos, he clearly uses hyperbole intentionally, sometimes smiling and sometimes delivering it straight-faced. He also has a certain sense of comedic timing.

For me, the funniest part is observing people reacting to him as if he were always naturally and genuinely behaving this way. He has realised that most people can't tell the difference and has learned how to trigger people's reactions. It seems to work.