This is an event to raise awareness, usually for prostate cancer, but for men's health in general. The month of November has been dubbed Movember, and participants are dubbed either Mo Bros or Mo Sistas; Mo being short for Moustache.

To participate, you start off with a clean shave on October 31st, and do not shave your moustache for the entire month of November, and then resume your regularly scheduled shaves on December 1st. While this is generally a men's event, women are welcome to show support as well, via other means.
No Shave November
www.movember.com
by JayDiddle November 8, 2011
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To not partake in the use of a razor for the entire month of November.

This month has the effect of categorizing men, most of whom will have a girlfriend who disapproves and will counter by offering "No Sex November" as well. The pussies will cave within the first week and shave. The candidates will go the whole month without shaving. But the real men among us will not only not shave but will have sex anyway, once again proving the theory that women are always wrong.
Average douchebag guido chump: I was participating in No Shave November, but my ol' lady wouldn't give me any so I had to shave.

Moderately manly man: That's fucking weak. I went the whole month. Suck it up!

Fucking Viking: Hahaha, you two are a bunch of pussies. I couldn't even keep the bitches off of me this month, because I am a fucking Viking! Ha, ha.
by General Septem October 6, 2009
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The month of November in which you don't shave any hair of your body but instead you grow more bestial, brutish, and manly.

The months of December, January, February, and so on follow and may also be included in this celebration of masculinity.

December = ("Don't Shave December")
January = ("Just Don't Shave January")
February = ("Forget to Shave February")
March = ("Masculine March")
April = ("Atrocious April")
May = ("Manly May")
My buddies and I all participated in No Shave November to raise awareness for the important and educational month of November. It is now a recognized national month that identifies the worth and meaning of celebrating masculinity.
by jpabaloni November 19, 2006
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When a male doesn't shave their facial hair during the entire month of November. Also known as No Girlfriend November.
Boyfriend: I think I'm going to participate in No Shave November this year.
Girlfriend: That's fine, but don't call me until December 1st.
by idontlikebeards November 23, 2013
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A college tradition that involves avoiding shaving because it's no shave November, or usually because you're just too lazy. Fortunately, every month can be made into a no shave month.
Paul- "Dude your beard is gross, you should shave."
John- "Sorry bro, it's no shave november."

Other months:
Just don't shave January
Forget shaving February
Mustn't shave March
Avoid shaving April
Etc.
by Jesus Con Carne April 27, 2010
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The act of shaving on the last day of October then not shavin for the etire month of November. One December 1st you compare youre facial hair with your friends and enjoy reminicing on the experiance that was No Shave November. It only becomes exceptable to shave again on December 1st.
Man I can't wait to see my awesome beard after No Shave November is over.
by Dr. Shave December 2, 2009
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A guys way of showing how much testosterone he posseses by showing how much facial hair he is physically able to grow.
*Guy walks by with glorious no shave november beard*

Girl 1: Damn you see the beard on that guy what a manly man! meooww
Girl 2: If his beard is that big, i wonder what hes packing in his pants..
by Ma3asalaama November 1, 2011
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