DeFranco - (adj) a state of mind in which one is excited to the point he or she is compelled to veraciously respond to external stimuli.
(n) 1. the act of passionately expressing a view or opinion. 2. one who is bluntly honest.
"Don't make me get DeFranco. You won't like me when I'm DeFranco."
"Oh, but don't let me get on a DeFranco. I could go on for hours."