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The day of the week in which mustaches are photoshopped onto pictures of Sara Quin and then uploaded to tumblr.

Since it's inception on September 17, 2011, Sarastache Saturday has garnered "hit and miss" popularity, although compared to it's sister projects Tegan Tuesday and Ptosis Pthursday, it has done considerably well.
dood, "Hey everybody, it's Sarastache Saturday!"
everybody, "What?"
by MetalKitten October 08, 2011
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Dirty Sanchez Plush

It does not matter how you do it. It's a Fecal Mustache.

Buy the plush