Top definition
A modern insult derived from the commonly used Silly Goose.
When someone does something particulary strange yet funny you call them this.
Little Timmy is dancing around with a diaper on his head.

Suzie: Oh Timmy, you are SUCH a silly moose!
by SilverSky August 06, 2008
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2
Originated from an apocalyptic cult. Slang term used for a viking warrior god with a coffee addiction.
But we're here to bring about the apocalypse silly moose.
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The vengeful act of crapping on a lover's chest while they sleep.

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3
n. A sillymoose is cute, incredibly adorable, and quite possibly the best thing that can ever happen to you.
Wow, she bangin, she your sillymoose?
by misterrrpickles:D November 08, 2010
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10" high plush doll.

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