“When my boss asked me who is the stupid one, me or him, I told him everyone knows he doesn’t hire stupid people” is a jocular saying that has been printed on many images.
 
“Boss asking employee: Who’s stupid? Me or you? Employee answers: come on boss, we all know you don’t hire stupid people! RT if you like” was posted on Twitter by sligotv on March 13, 2009. “When my boss asked me who is the stupid one, me or him, I told him everyone knows he doesn’t hire stupid people” was posted on Twitter by جنة ميرأ (and others_ on August 4, 2012 (when the joke was possible posted on Sickipedia).
   
     
Twitter
sligotv
@sligotv
Boss asking employee: Who’s stupid? Me or you? Employee answers: come on boss, we all know you don’t hire stupid people! RT if you like
8:35 AM · Mar 13, 2009·Twitter Web Client
   
Twitter
جنة ميرأ
@miraazys
When my boss asked me who is the stupid one, me or him, I told him everyone knows he doesn’t hire stupid people.
6:13 PM · Aug 4, 2012·Twitter Web Client
   
Twitter
Umair Maqsood
@UmairMaqsood
When my boss asked me who is the stupid one, me or him? I told him everyone knows he doesn’t hire stupid people.
9:47 PM · Aug 4, 2012·Twitter for iPhone
 
Google Books
Jokes Insults Quips & More
By Kooper Salmo
Lulu Press (Lulu.com)
2016
Pg. ?:
When my boss asked me who is the stupid one, me or him? I told him everyone knows he doesn’t hire stupid people.
 
Twitter
psyCON™
@TheHonestCon
Boss: Who’s stupid? You or me?
Me: Boss, everyone knows you’re smart enough to not hire stupid people.
*Fired*
4:22 AM · Sep 25, 2017·Twitter for Android
     
The Reporter Times
Happy Boss’s Day 2018 Images Quotes:
Inspirational Sayings and Messages for National Bosses Day
By Steven Lembart -August 21, 2018
(...)
5. “When my boss asked me who is the stupid one, me or him, I told him everyone knows he doesn’t hire stupid people.” – Unknown
 
Google Books
Seymour’s Cryptoquotes - Humorous Cryptograms
By Erik Zidowecki  
Lulu Press (Lulu.com)
2019
Pg. 113:
When my boss asked me who is the stupid one, me or him? I told him everyone knows he doesn’t hire stupid people. -Anonymous
 
Twitter
Omasilachi Amanda Ifeoluwa Chinda
@amandachinda_
When my boss asked me who is the stupid one, me or him? I told him everyone knows he doesn’t hire stupid people.
2:09 AM · Mar 21, 2019·Twitter for Android
 
Twitter
BoyPsyche
@divin_alain
KA STORY
When my boss asked me who is the stupid one, me or him? I told him everyone knows he doesn’t hire stupid people. Now I’m fired
10:46 AM · Aug 3, 2020·Twitter for iPhone