(Adjective) Although medically similar to colorblindness but people suffering from being color-retarded constantly try to correct people from saying colorblind with fraudulent terms such as color-deficient. Color-retarded is the politically correct term for colorblindness.
1.)Chris Rains is so color-retarded that he doesn't know the schools colors.
2.)Mr. Rains can't understand the theory of color because he is so color-retarded.
Someone who is so totally clueless that they will believe absolutely anything you tell them. A lifelong condition which can prove fatal without intervention.
"I told Mikey that in order to jump start his car it needs to be hit from behind at 30mph. He's so morbidly retarded that he was about to do it until someone told him otherwise."