The more wrinkles you have on your brain, the smarter you are. Having a silk brain is the lack of wrinkles on your brain, denoting extreme stupidity or inebriation.
"Nice move, silk brain."
"What a silk."
"Did you see Matt at the bar last night? He got silky as hell."
by Ridicculus June 22, 2009

5 Words Related to Silk Brain

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