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A current or former student of the Mark Twain School for problem kids in Rockville, Maryland. Any student of an alternative school.
You can see twainiacs being arrested on "COPS" or on "Jerry Springer"
Twainiac by K Joyce October 2, 2007
Related Words
A former student of the mark twain school, which featured grades 7 through 12 and offered kids who were coded as emotionally disturbed (nutty) a place to run amok with other such unbalanced and often dangerous fools. The school is located in rockville Maryland next to a large forest area. Staff members often restrained students physically then went home and masturbated to the memory of it. Mark Twain would be the last place you might want you're child to end up unless you were grooming them for a circus side show act.
That child just beat up that other child with a trash can, i think they might send him to Mark twain, what a twainiac he will be indeed!
twainiac by truth fan November 4, 2009
A fan of country music star Shania Twain
Twainiacs were thrilled when Shania took to the stage.
Twainiac by Greg Davis September 30, 2007

trainiac 

some one who is completely and utterly obsessed with the band Train
Katie knows the word to every Train song she hears and has been to three of their concerts. She's a total trainiac.
trainiac by misstrainette17 October 6, 2010

Trainiac 

Any person extremely interested in, or obsessed with trains.
My trainiac brother can’t stop buying model train cars.
Trainiac by Frankenb!ke October 24, 2023
More from Urban Dictionary

trucker's tan 

A sunburn or suntan focused on the left arm. It is caused by the left side of the body being the only half that gets exposed to sunlight while driving. Presumably, it would be located on the right side of the body in countries where they drive on the left side of the road.
I had a trucker's tan after driving for 10 straight hours on a sunny day.
Word of the Day on October 5, 2026
The phenomenon where adults salivate at children's toys
Every time I walk into the toy aisle, I catch myself kidulting over the latest action figures and LEGO sets!
kidulting by Emotional Cruiser October 12, 2025
Word of the Day on October 4, 2026
British slang for a scientist or technical expert, esp . when the speaker is not certain of the expert’s specific field of study. Not necessarily derogatory, but typically used by persons without a technical background. In the US, the equivalent would be “egghead”, “squint”, or “geek.”

Origin of the word is unknown. Started sometime in World War 2. Given the typical evolution of British slang, could easily have started because what these experts did was confusing or “baffling” to the common person.
According to the boffins downstairs, the murderer used a serrated blade.
Boffin by Agnon February 11, 2023
Word of the Day on October 3, 2026
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