Nishachar

This is something which happened a while ago.
We as in Lokhande and I were discussing some arbit stuff with Shakti, when I suddenly said that a certain person is "Nishachar" (निशाचर) (meaning : according to me, someone who wakes at night actually, an owl.). But then, Shakti suddenly blurted out: वैसे तोह हम सब निशाचर हैं । निशाचर वह होता है जो रात को खाता है। (some one who eats at night). Then, after taking his case, he justified his claim:
Nisha ko charne wala nishachar hota hai!!! Jo raat ko charta hai woh nishachar!! Vaise hum sab Nishachar hai; Nishachar ek shaitaan hota hai. We are not supposed to eat at night!!