1 definition by Alphastarr

Top Definition
When your brain finally figures out something that was on the tip of your tongue (i.e. an eighties song or the name of a movie, etc.) and you end up yelling it at a random moment after the fact that is at a point of time that has nothing to do with the thing that you remembered !!
("OH My GOD !!!, Just had a Braingasm!!!!!!")
by Alphastarr October 03, 2013

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