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A complete and utter mush of your brain as soon as you see snow falling. Full effect happens when at least 2 inches of the white stuff is on the ground and you can play. Snow brain takes over all thoughts and ensures you forget everything you should be doing and forces you to get excited about rolling about in it. Often affects children and diminishes as you get older, but not always. Often affects men more than women. Women equivalent is baby brain.
Look! Look!! It's snowing!!! I'm so excited!!! I can't think of a thing else! I have to go! I have snow brain!
by ChiefPoof May 27, 2016
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