A general feeling of euphoria in the human body, most often experienced after a traumatic event is over and change is on its way. Do not be fooled by regular euphoria, having an Obama occurs only after the most extreme events.
Citizens of the USA all had a feeling of Obama after Barack won his first term as president.
I had an extreme case of Obama after I took a huge shit.
While I was pounding the shit out of her ass, we both experienced an Obama as we experienced simultaneous orgasms.