Grammarian, grammar nazi, grammar police—as a professional writer, it’s a safe bet that you either call yourself one of these or know someone who does. I used to joke with a friend that if I ever owned a personalized license plate in Michigan, it would say “GRMR5O”.

Whether you find pleasure in spotting misprints in copy or discussing favorite punctuation marks, you’re in luck—March 4 is National Grammar Day.

Founded in 2008 by the Society for the Promotion of Good Grammar, this year’s Grammar Day is hosted by Mignon Fogarty, aka Grammar Girl. The Grammar Day site has a variety of fun ways to mark the occasion, including a free e-card and “March Forth: The Grammar Song”.

You can also:

• Check out The Oatmeal for comics on how to use a semicolon and how to use an apostrophe.
• Browse sites like CafePress and Etsy for grammar gifts.
• Find out which punctuation mark you are with a quick quiz from OK Cupid.
• Join fellow grammar elitists on Facebook, in groups such as I judge you when you use poor grammar. and Good Grammar Is Hot.

As for me, the grammar 5-O? I will relive my childhood with grammar lessons from Schoolhouse Rock. How will you celebrate Grammar Day?