Yomi せきずいはんしゃ Rōmaji sekizui hansha Type slang Literal Meaning spinal reflex Meaning a knee-jerk reaction; to do/react to something impulsively/naively/without thinking much Synonym ワンパターン Additional Info It is often used ironically when someone always responds to someone/something (e.g. web news) in a naive or predictable way (see the example sentence below). It is also used when you do something impulsively, e.g. buy something impulsively when you see its ad on the internet. Example 芸能人が寄付をする度、脊髄反射で売名行為だと批判する人がいる Whenever celebrities do donation, some people naively criticise them, saying that their ulterior motive is to make themselves famous. Related Post アホの一つ覚え アホの一つ覚え (aho no hitotsu oboe)Read More