I am a bitcoin purist and have tried to educate myself about all aspects however one fact eludes..... Corn
i don't think there was a specific time and place where "bitcorn" was coined. i think it was just a play on words. the term was popularized after a professor from boston university (mark williams) predicted in 2013 that BTC would be trading at $10 a year later.
he was named "professor bitcorn" by the community. i don't think there's a real explanation as to
why he was named that. just a joke, really.
anyway, the term stuck. now people shorten it to the "corn"
