Retardious 

Being of or associated with people of the retarted nature.

Anthony: I play with barbies

Max:do you really ?

Anthony: YAAAA

Max:Your fuckin Retardious

Retardious by Max and Anthony November 10, 2008

retardious 

The combination of retarded and hilarious

Dude, you're freakin retardious....

retardious by Stephen b. November 10, 2004

Retardious Ninkapoopous 

The Retardious Ninkapoopou is a rare creature that takes the from of a normal human but Has an IQ of 3.

I think that guy is a Retardious Ninkapoopous

Retardious Ninkapoopous by Denim Jeanes September 5, 2018

Retardis 

A term for a person that is actually more retarded on the inside than they appear to be on the outside.

Derived from "retard" and the Dr Who Tardis machine.

"I didn't realise she was so stupid at first! She is such a retardis!"

Retardis by drmwoz October 28, 2009

Ultimativos Retardos 

The ultimate form of retardation.

MARK: I JUST WON A GAME OF FORTNITE
ROBIN: ULTIMATIVOS RETARDOS

Ultimativos Retardos by THATTOOMAS May 7, 2020

retardiculous 

Ridiculous to a retarded level. Something so stupid it's beyond any sane reason to do it.

That was retardiculous to try and steal a live lobster by stuffing it down your pants and trying to walk out of the store!

retardiculous by Atakith December 20, 2016

retardis 

N. Acronym: Retrogressively Experienced Time And Relative Dimension In Space; a space/time-travelling vessel that is much smaller on the inside

"I wouldn't bother bringing the stereo. The RETARDIS may take up more space than an aircraft carrier, but the interior is about the size of a phone box."

retardis by chromalogue April 24, 2008