Sometimes when I have a great big idea, I do this too. But I mainly do think while brainstorming outloud. When I do this to my co-founder, sometimes he'll say

Sometimes when I have a great big idea, I do this too. But I mainly do think while brainstorming outloud. When I do this to my co-founder, sometimes he'll say "I get it, you don't need to try to sell me on it." In reality, I'm not, I'm just trying to navigate to more common waters--but it's a reflex that's not always helpful. This sounds like what I do sometimes, only to your boss.