What is the meaning of illegitimi non carborundum?

"Illegitimi non carborundum" is a pseudo-Latin phrase that translates to "Don't let the bastards grind you down." It serves as a motivational expression encouraging resilience and perseverance in the face of adversity or challenges. The phrase is often used to inspire individuals to maintain their strength and integrity despite external pressures or negativity. Its playful, yet defiant spirit has made it popular in various contexts.