The “Professional Retard” meme features SpongeBob SquarePants sporting a nametag that reads "Professional Retard." One of the reasons behind its widespread popularity is because it features one of the meme-loving demographic's favorite animated characters, SpongeBob SquarePants.
This meme, as I'm sure you already know, originates from one of the world's greatest cartoon series, SpongeBob SquarePants. The top portion of the image is from the episode "Lost and Found" where SpongeBob is holding a rubber chicken on whoopee cushions. The bottom portion of the image is from "The Algae's Always Greener" where SpongeBob shows Squidward his Co-Cashier tag, which is edited in the meme to say "Professional Retard"
The first known person to share the image was ADashOfClockAndALotOfKnives, an Imgur user who shared it on the image-sharing platform. Its caption was "When you look at a mem for 30 sec then you notice it is an ad [sic]".
A Reddit user posted what is now known as the "Professional Retard" meme to the r/dankmemes subreddit. The post has since received upward of 30,000 points at a 97-percent upvote ratio.
We all make mistakes. People use this image macro, adding captions of their own, to share dumb or silly things they've done in their lives or noticed in pop culture.