BAD IDEA
If I call someone ugly, am I being honest or mean?
Calling someone ugly isn't honesty; it's just being mean with zero charm.
If you're calling someone ugly, congratulations: you're not practicing brutal honesty, you're practicing rudeness. 'Honesty' doesn't give you a free pass to insult people. Being honest is useful; being mean is just social poison. So, pick your weapon carefully — or better yet, just pick kindness.