Because first rule of thumb is it is never pleasant. You can count on it.
Unpleasant does not equal toxic sick wad though.
We need more. They make you not want to ask them anything for fear they might actually tell you.
This is all circumstantial, but there are tons of them and we need to make sure we can put them safely under one umbrella and not get to narrow here in our definition.
After all, we are talking about all of them.
Anything that comes out of their mouths is grumbling and griping about their lives. That's a given.
Sometimes they are just (NO all the time) profoundly stupid.
Not all of them do this one, but anyone who does this, automatically is included in emotionally sick wad behavior. Hurting animals and getting pleasure from that. People who hang around grade schools for no apparent reason at all
I watch how they talk about others and what stresses them out. If they are always on a negative tread for little reason and find fault with everyone but themselves, I stay far away from them.