Today marks an important day for word users and language speakers everywhere. It’s National Grammar Day! There are all kinds of ways to celebrate this special occasion: Proofread an e-mail message before you hit “send.” Show some Facebook friends you care by correcting their grammatical mistakes in the comments section of their posts. Read a grammatical page-turner, like Woe Is I or Eats, Shoots & Leaves. Try your hand at a quick Facebook editing contest hosted by Grammarly, called “Edit This.” Or, for goodness’ sake, just take care to craft a structurally sound sentence with all your commas and apostrophes in the right places.

In honor of the holiday, here are 10 heartfelt sentiments to send to someone you love. Enjoy!

In honor of the day, tell us—which grammatical mistake makes your skin crawl?