1 definition by beerpatzer

1. A throwback to something very pleasurable in one's past.
2. A feeling of absolute bliss because one suddenly remembers something pleasant in one's past
John: I think I just had memgasm
Jilll: OMG, what happened??
John: I just heard "Smoke on the Water" for the first time in like 25 years
by beerpatzer August 14, 2015
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