I assume the word "bullshit" is a compound word of "bull" and "shit." Then does it originate from farmland, perhaps?

Native speaker’s answer
Rebecca
Good guess, but not quite! It likely originates from the French word "bole," which means "deception, trick, scheming or intrigue." Thus, it's not really related to farming, but it is related to deception. Remember that "bullshit" is a bit of a vulgar word, so be careful when you use it. Ex: That's bullshit. Stop lying. Ex: The politician spread a lot of bullshit about how vaccines are causing autism.