Describing someone who messed up a lot, or can't speak correctly. This person can just be a mess. Tism is characterized by difficulty in communicating with others, or just being unreliable.
by samibitt May 2, 2018
Get the Tismmug. Horrible word for an autistic child. also halerious when used. also can be used to call someone mingy and weird.
by liverpoolxoooooo November 29, 2017
Get the Tismmug. Usually referred to as Caden Long. Number 2 kicker in Georgia. Lost to Braden Ralston in a kicking challenge in the GHSAA 9th grade all star game. Loves fortnite, but sucks at it
by Dylan tran May 26, 2018
Get the Tismmug. A term used ironically as self-deprecating humor by individuals on the autism spectrum as a way of reclaiming their identity from being pathologized. The use of the term makes autism sound like an antiquated, old-timey disease, reflecting society's biases against neurodivergent folks back at them.
"You'll have to forgive me for acting so awkward around your friends.... my 'tism was acting up, sorry!"
by Gracias Marcia September 5, 2021
Get the 'tismmug. by greymanboybearpig June 10, 2020
Get the tismmug. 
Means fucked up, from the band of the same name. a fucked up situation. someone who is acting weird?!
by John Smith December 4, 2004
Get the tismmug.