'Spedistic' is an adjective. It is defined as dumb, special ed, and unintelligent. It can be a synonym for 'sped' or 'slow'. 'Spedistic' can describe a person, action, or thing.
Example #1:
You: "Why did you pour hot tea into a plastic water bottle?"
Your Sister: "I didn't think it would melt!"
You: "You're so spedistic!"
Example #2:
Your Friend: "Ms. Smith gave us extra homework because one person was talking!"
You: "Bruh she's literally spedistic!"
An alternate version of the word speeding, used chiefly by corporate whores, Wifeswap contestants and people with severe retardation (esp. sufferers of Angelman Syndrome).
I had a meeting in 5 minutes, but I just really needed to rub one off. I was speedsturbating my ass off!
Alright, everyone, you know the rules to Speedsturbation. Money in the pot in the center of the hallway. I say go, first person to enter their dorm room and successfully finish, clean up, and come back out gets it all... GO!