If someone asks a question, and you answer that question honestly, even though the answer might upset the OP, should you refrain from answering honestly?

I recently had a question modded for calling out an OP for being a jerk. I gave a definition of what a jerk is: when you purposely do something hurtful to a friend. That is one of the definitions of being a jerk. There are others.

Naughty/blue/colorful language is allowed on Fluther, but apparently referring to someone as a jerk, even though their behavior fits the definition, is not allowed, except by some people.

Other words to describe behavior is allowed. People are regularly referred to as a-holes, douchebags, and asshats. I think it’s warranted when people act like jerks, A-holes, douchebags, and Asshats, and a reason/definition is given for the descriptive moniker.

A personal attack is when someone says, “The OP is a big poopy head!” but no reason/explanation or definition is given. If the OP actually had sh*t on his over-sized head, and it’s pointed out, that shouldn’t be considered a personal attack, it’s just pointing out what is. Also, if the OP is engaged in an action, such as being rude, it should be allowed to point out that the person is rude, and evidence should be given to make the point (example: here is what you said, and here is what you did).

So my question remains, what is the correct answer when someone is doing something terrible? Should we tell them how sweet and saintly they’re being, or should we tell them the truth?