Ok, let's see.
An example would be poster #1 tells poster #2 that their spelling is awful.
Poster #3 then points out that poster #1 had a spelling error in their post also. Just sayin. Sort of like, I'm only pointing it out, I have no dog in this fight, don't get mad at me for it.
A young couple decide to move on in their relationship, and the girl is meeting the boys parents for the first time. She's super nervous and asks how she looks. The boy tells her she looks like a hooker. Just sayin. He has to be honest with her because it's an important event, but don't get mad at him for it.
Kind of like a "you should know even though I don't want to be the one to tell you" type of thing?