“You could’t polish shit” is a popular aphorism around similar to "Placing Lipstick on the pig" (Despite the fact that "a turd" is a lot more typically utilised). On the other hand, the TV present Mythbusters showed that somebody can, in actual fact, polish a turd. a vulgar : https://chink22109.blog4youth.com/37497865/everything-about-motherfucker