Top Definition
Something utterly ridiculous, ludicrous and otherwise beyond the pale, thought up either by someone blotto out of their mind trying to make their way home on a moonlit night, or someone impersonating them.
She's trying to give me the same old moonspin about how she couldn't help it, the bottle of Jack Daniels just jumped on her.

More of this moonspin about Creationism and that on the telly.
by Fearman January 10, 2008

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