Mattus is a word for someone who suffers from very severe Autism, ADHD/ADD and other unknown mental disorders.

Basically the person is fucking retarded.
Stop being a Mattus!
by DLSxd March 14, 2017
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Krish Mattu- a hench 14 year old beast who is capable of lifting insane amounts of weight in the gym. He is also known to have a large forehead kink and uses famous anime catch lines such as "sank you".
The well known Krish Mattu stood Infront of me, known as the beast from the east capable of destroying people with a single punch.
by Lion Panda February 8, 2023
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It’s a mattues, search apple in the urban dictionary and he is the opposite
“Who’s that over there eating his boogers?”
Oh that’s mattues
by Somanyissues July 30, 2021
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