Much of the time I'll start saying a joke out loud before I even come up with it in my head. 90% of the time this causes to me to be fast, witty, and funny, and the other 10% of the time it causes me to say really stupid things that don't really make any sense or are considered to be way too offensive.
I don't care about mistakes though. There's this quote from The 48 Laws of Power that reminds me of how I usually act. "Any mistakes you committ through audacity are easily corrected with more audacity."
And I definitely agree with what Substitute said about arrogance. Maybe I'm joking, maybe I'm mocking myself, or maybe I'm just trying to inspire people. If it was true arrogance, I wouldn't flaunt it around like that.