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1.
While attempting to construct a coherent thought you link two random idea's, products, or situations together that have absolutly no relation to one another.
Girl - The electricity went out at work today, It's not my fault that they didn't pay the cable bill.

Guy - That was such a Meganism!
by alu-miguel May 24, 2012
 
2.
Any type of fuck up that can be laughed at by a group of friends.
*spills water on surf shorts* here, my legs wet, I thought swimwear was waterproof.

I just had a Meganism. I lit my cigarette at the wrong end.
by MeeganSteeeeee April 10, 2010