English is not my first language, so please humor me on a very perplexing question: Is there a word in English that describes the activity going on when one asserts or suggests that another is judgmental?

The first time I heard the phrase "I'm just sayin'" used postpositively was about six months ago. A friend, much more aware than I of new slang and hip expressions, was advising me to take an action I did not agree I should take. Her use of the phrase appeared a lame, last ditch effort to convince me of something she knew I could never be convinced of. But I'm not really sure about it... I'm just sayin'.