dumbilitus 

An extremely dumb person who has no hope of ever regaining smartness ever again. They are unable to comprehend things like the average person and are so stupid that it must be diagnosed by a licensed dumbilitus doctor.

Homie 1: Yoooo homie did you know I accidentally ran into a window
Homie 2: I think you got dumbilitus homie

dumbilitus by ilovehomies December 23, 2022

dumbitious 

Trying your hardest to be or appear dumb, whether intentionally or unintentionally.

Liam: I hear someone said they has an IQ of 175 from an internet IQ test.
Josh: He's so dumbitious.

dumbitious by random1234567890 March 12, 2009