a sense of euphoria from the result of Barrack Obama winning the election of 2009. A person undergoing an obamagasm cannot shut up about how great Obama is.
A mixed rush of feelings and emotions when the president appears on TV. Very similar to an orgasm, an Orbamagasm causes uncontrollable body twitching; not out of pleasure, but out of frustration.
EVAN: Did you watch the presidential address last night?
TYLER: Yeah dude, I had the biggest orbamagasm right in the middle of it.
EVAN: Yeah I can't believe this country was stupid enough to vote for him.
you vote for and your nation elect your first black president, make sure that he's referred to as the black JFK, and inaugurate him right before your first class of the last semester of your college career. It creates a string of emotions all at once.
On January 20, 2009, the United States elected it's first black president and I was so elated to be a part of history that I had an Obamagasm.