I don't know the history, but some men have begun taking on November as a month to grow facial hair. There are various plans at this point. Some call it "Novembeard." Some grow just a mustache and call it "Movember." I stuck with the term "No Shave November" although what I technically did was probably more akin to "Novembeard." Oftentimes, men use this as a means to heighten awareness about various things. I did not. I just did it say that I could.
Growing it out is one thing, but the real fun comes with shaving it off. Here's the progression: