Tismatic 

To describe someone utterly stupid; might be slightly offensive

You heard Timmy was at the lockdown protests?
I know right, kid's mad tismatic!

Tismatic by Oloystuff April 27, 2020

Tismatic 

Tismatic is the hidden super power caused by autism.

Unbeknownst to Timmy, just by working in the same vicinity as the engineers, Timmy has absorbed their knowledge for himself. That Timmy sure is such a tismatic, he never even had to study!

Tismatic by Bumbass fiddler May 8, 2024