Comment by danielodievich

In russian there is a saying that translates "try to prove that you are not a camel" which describes the impossibility of proving what is obviously not true to an unwilling and/or obtuse party.

According to russian language wikipedia (https://ru.wikipedia.org/wiki/%D0%94%D0%BE%D0%BA%D0%B0%D0%B7...) the original tale go out to famous Persian poet Rumi from XII century, which just makes me tickled pink about how awesome language is.