What does adding "Just sayin..." to the end of a statement add to the statement.

[Harry P.]

Some versions even flag odd syntax and such.

Not this version.

[Scott Colmer]

Our family just had a great discussion on this very subject.

I think people treat "I'm jus' sayn' like a conversation al mulligan, so they can get away with saying things that are inappropriate or unkind. I'm sus' sayn' - so you can't call me on being cruel.