Summary: It is one of the 2channel terms. The etymology is mentally retarded person → intellectual disability → chisho → ikenuma (kanji on reading). This term refers to people who make incompetent comments, not necessarily because they actually have an intellectual disability. Ikenuma was born from an abbreviation + mistranslation. People with intellectual disabilities were originally referred to as "mentally disabled" on the internet, but since "chisho" doesn't come out even when converted, it has the same meaning. Original meaning (main image is this). A slang word that uses the homophones for ``mental disability,'' which is an abbreviation for ``intellectually disabled person.'' Derogatory words, discriminatory words. (Related to 2) The person's speech and behavior are so incoherent that an intellectual disability is suspected.
A Comprehensive Guide to Craigslist PA for Sale Find the Best Deals in
Ikenuma is a word used mainly in the 2channel area to mean a person with an intellectual disability (person/child), and is said to have originated there. Intellectual disability (person) (chikisho gargar (sha)) → knowledge.
