n, \ʃæft.stæʃ\
: a pube-do that results when a man shaves or waxes all of his pubic hair except that around the base of the penis, leaving a moustache-like fringe.
Kendall learned that waxing his shaft was incredibly painful so he always sported a shaftstache.
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.
A mustache that is only partially grown. It is usually found among guys in high school whom are too unkept to bother shaving before most of their facial hair comes in. Their mustaches look really crappy.