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1 definition by THE evil bagel

When you aren't feeling it "down there", but your brain(and nervous system) is jstu so overloaded with feeling(usally about a person).
girl one: omg..look at the hot guy!
girl 2: yah..thats michael!
girl 3: wow...omgomgogm! brain ORGASIM!
by THE evil bagel May 29, 2005