TismTasm 

A "TismTasm" is when an individual has a tantrum fueled by their "tisms" (short for autism). The "Tasm" is a modification of the word "spasm" by alliteration to better match with the word "tism".

Overall a TismTasm is a spastic tantrum fueled by mental retardation. The individual may be screaming incoherently, throwing and/or breaking things, and not being able to communicate properly with those trying to calm him down.

"yo whats wrong with Greg? He's jumping up and down screaming and flinging shit against the walls"
"He's having another TismTasm cause he lost in Mario party"

TismTasm by ouncegod February 23, 2020

tismtastic

an adjective to describe something autistic. (used in a joking manner, don’t disrespect people with autism or learning disabilities, i’m just kinda insane 🤘😍)

“Wow, that was tismtastic-“
“That’s so tismtastic guys.”

tismtastic by OffbrandAnthony2530 December 4, 2023

Tismtastic

A combination of the words Fantastic and Autism. Usually used to describe someone as Autistic. Mostly used in a joking manner.

'Im so tismtastic'

Tismtastic by V1nny_211 March 18, 2026