"I celebrate 4/20 on 1/5 because I know how to…

“I celebrate 4/20 on 1/5 because I know how to reduce fractions” is a jocular saying that has been printed on many images. April 20th (4/20) is “420 Day,” a celebration of cannabis consumption. January 5th (1/5) is usually not a holiday.

“I celebrate 4/20 on 1/5 because I know how to reduce fractions UNLIKE THE REST OF YOU IDIOTS” was posted on Twitter by Erik Lars Knudsen on April 21, 2013. “I celebrate 4/20 on 1/5 because I know how to reduce fractions UNLIKE THE REST OF YOU IDIOTS! #blazeit” was posted on Twitter by Taylor Cook? later on April 21, 2013. Authorship is unknown.

Wikipedia: 420 (cannabis culture)
420, 4:20, or 4/20 (pronounced four-twenty) is cannabis culture slang for marijuana and hashish consumption, especially smoking around the time 4:20 pm, and also refers to cannabis-oriented celebrations that take place annually on April 20 (which is 4/20 in U.S. form).

Twitter
Erik Lars Knudsen
@eriklights
I celebrate 4/20 on 1/5 because I know how to reduce fractions UNLIKE THE REST OF YOU IDIOTS
5:44 PM · Apr 21, 2013·Twitter for iPhone

Twitter
Neil Nagpal
@NeilNagpal
“I celebrated 4/20 on 1/5 because I know how to reduce fractions unlike the rest of you idiots”
6:24 PM · Apr 21, 2013·Twitter for iPhone

Twitter
Taylor Cook?
@ndcocinero
I celebrate 4/20 on 1/5 because I know how to reduce fractions UNLIKE THE REST OF YOU IDIOTS! #blazeit
7:45 PM · Apr 21, 2013·Twitter Web Client

Twitter
baron la croux
@Zxash
I celebrate 4/20 on 1/5 cause I know how to reduce fractions unlike the rest of you idiots.
-Dominic Harris
10:01 PM · Apr 23, 2013·Twitter for iPhone

Twitter
micah
@BennyVelour
“I celebrate 4/20 on 1/5 because I know how to reduce fractions”
5:36 PM · Mar 17, 2014·Twitter for iPhone

Twitter
DJB
@DevinBatista954
“I celebrate 4/20 on 1/5 because I know how to reduce fractions”-
@DomComedy
6:32 PM · Mar 17, 2014·Twitter for Android

Twitter
DannyDanko
@DannyDanko
I celebrate 4/20 on 1/5 because I know how to reduce fractions. #SmartStoner #ProductivePotPeople
12:16 PM · Jan 5, 2017·Twitter Web Client

Twitter
Weed N Snacks !
@weednsnacks
I celebrate 4/20 on 1/5 because I know how to reduce fractions.
1:53 PM · Jan 5, 2021·Twitter for iPhone

Facebook
More Crazy Stuff
Poster based in Spain · January 5, 2021 at 3:36 PM ·
I celebrate 4/20 on 1/5 because I know how to reduce fractions.