As a reader of HIGH TIMES, you might not know the exact origin of 420 (read about it HERE!), but you most likely know that it’s the #1 stoner holiday! But that doesn’t mean everyone else is quite as familiar.

As reported by MTV, an email exchange between a college professor and her student about 420 has gone viral after screenshots were recently posted on Imgur. The college student was notifying the professor about an upcoming doctors appointment, noting “I know this sounds suspicious because plenty of people will skip class for other reasons on 4/20, but I can provide a note from the doctor if needed.”

The best part of the story? Imgur user gardenhose updated the post with the following: “She’s cancelling class ‘Enjoy Wednesday!'”

More 4/20 Coverage:

The Inside Scoop on the Secret Origin of 420

The Ultimate 420 Playlist: 42 Songs Celebrating the Highest of Times

All the Reasons Why You Should Celebrate 4/20 in Vegas

Another 420 Smoke-In And Pot Giveaway on Capitol Hill

Psychedelicatessen: 4/20 Green Cake

For all of HIGH TIMES’ culture coverage, click here.