retardanitus

The act of catching a mental handicap like a disease.

Marc just had a simple case of retardanitus.

retardanitus by Backblast420 March 7, 2021

retarditus 

a very lethal disease that makes you so incredibly stupid.

Hey bro you have retarditus

retarditus by fboiretard April 10, 2019

Retardatious

If something you are doing is retarded then it is Retardatious.

You: Why are you wearing a Thomas the Tank Engine costume.
Me: Because its Retardatious

Retardatious by Heyitzimy April 7, 2019

Retarditus 

Retarditus, another way of saying somebody is a retard and adding more of an insult with the 'itus' by implying that they have it as a disease.

Daniel "Your such a fuckin twat!"
Person "Yet another case of Retarditus..."

Retarditus by KtKornStar August 15, 2004

Retardonitus

The disease that causes one to become retarded.

"The Retardonitus is hitting you hard today"

Retardonitus by BeegSausij June 4, 2019