The text is attempting to make a dark joke based on the misunderstanding of the word 'behind' due to dyslexia, implying the person intended to jump in front of the train. However, dyslexia does not cause people to misinterpret prepositions like 'behind'; it typically affects the ability to read letters and words. The joke is in poor taste and relies on a misconception about dyslexia rather than a play on words or similar-sounding words.
Suicidal dyslexic jumps behind train - film at 11