Seasonal Retardation 

Like Seasonal Derpression expect rather than being depressed, the subject becomes irrationally stupid instead, during winter months of the year.

Joe: *Wearing Glasses* “I decided to wear my contacts today”
Bob: “I Guess it’s that time of year again, Joe has Seasonal Retardation.”

Seasonal Retardation by Johnathan Bobby December 5, 2018

internet retardation

A person who has no idea of how to conduct themselves online by saying and doing things that would not be socially acceptable in real life.

Generally the actions of this person have no reflection of how they actually are.

Boy: OMG im lyk so c00l. Haunted house wif ma homes!!!111!one
Girl: I'm going too! See you there.
Boy: YESHHH! LETZ HAV S3X.
Girl: Do you have internet retardation?

internet retardation by Kittens with Mittens October 27, 2010

returnation 

Things being returned

We are due for a sudden Returnation of missing items!

returnation by Craig "MooGa" Harris May 28, 2008

Compound Retardation 

The act of doing something stupid, followed by another unitentional yet equally stupid action

S: Remember when K slipped in his own vomit and broke his arm?

M: Yeah, thats some serious compound retardation

Compound Retardation by MER8490 August 1, 2008

Mental retardation

Someone mentally stupid.

Conor you have mental retardation.

Mental retardation by Dictionary694208 August 16, 2021

Goofy Retardation 

The process by which someone that does actually posess some common sense, will look for the most ludracrous way to circumvent a problem/issue with a twisted sense of logic.

Goofy Retardation Example: Using gasoline to unclog a clogged drain, instead of a product like Draino, since its a harsh chemical, it must be good the the pipes. Another Example: Mayonnaise used as a protectant on a rod iron fence instead of car wax of some other protectant designed for said purpose.

Goofy Retardation by ExperiencedIdiotChaser December 17, 2011

Mental retardation

Anti-vaxxer

Hi I'm an anti vaxxer. I have the highest form of mental retardation.

Mental retardation by FuttBucker_imautistic April 29, 2019