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.

the whale tail is the shape formed when a g-string rides up high over a womans trousers