Top Definition
When Marge Simpson of The Simpsons makes an "mm..HMM... mmmmmmmmm" type of sound, usually as a result of something cleaning/good parenting related.
Bob - HAHA marge simpson just had a margegasm on the tvbox!
Bill - Shut up. I hate you so much and you are a loser.
by branqon August 08, 2006
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