Premeditated Retardation 

The act of actually taking the time to come up with a retarded idea in order to either A)Amuse your friends or B)Amuse yourself. What people usually don't undersand is that "A)" will never happen because people will just think you are a retard.

Walking into the factory with just his pajamas on, the man didn't realize he had just committed Premeditated Retardation.

Premeditated Retardation by Psycho-J November 23, 2004

Sentimental Retardation 

The need to keep tons of things for "sentimental" reasons. The inability to get rid of anything. Usually involves the need to rent storage lockers, because every room in the house and basement is already filled with sentimental knick-knacks and memorabilia.

When Jane moved out of her house, she needed to rent 3 storage lockers to store all of the things she couldn't part with. She suffered from Sentimental Retardation.

Sentimental Retardation by jcbailaz October 30, 2011

Chronic Retardation 

It's when someone is so dumb you are sure they are retarded but not medically diagnosed as being retarded.

OMG! Your you're such an idiot! Do you have Chronic Retardation?

Chronic Retardation by icchie_x October 8, 2009

Retardave 

When you are beyond stupid, you don't know how to type and you make it harder for everybody to understand you. You are also from the city of Magog, where the water has been poisoned by big pharma.

I don't know how to install Battlephil...

-What are you talking about ? Dude you're so retardave.

Retardave by Atthaniel January 15, 2021

Verbose Retardation

n. The case in which you are not aware of what the fuck is happening due to people using too big of words.

I experienced a total case of verbose retardation during that college lecture

Verbose Retardation by PingPongPowPan January 9, 2012

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

Retardant drop 

The act of hanging from a ceiling fan while masturbating and making airplane noises. Then shooting semen on a woman while hovering over her. Can also do with feces. Commonly called a dirty retardant drop

Bro I broke my fan last night doing a retardant drop on Sarah

Retardant drop by Black dot June 13, 2016