As someone who grew up in the suburbs of Southern California, It's been my experience that 'like' it's used to introduce a paraphrase that includes non-verbal communication and/or tones that introduce not-so-subtle comments regarding the paraphrase without directly commenting nor limiting yourself with a direct quotation.
For example, I could say "kristianc was like, OMG it is NOT a pause or a tic, it is SoCal dialect!" in a sarcastic tone and roll my eyes.
edit: This form of communication doesn't translate well into digital form - email, texting, etc. - unless both people are familiar with each other's body language and the dialect to visualize (at a conscious or subconscious level) the meaning.
All communication is to some extent subject to those limitations. Wittgenstein was so like "language acquires meaning through context, bro" but only in his like, later period.
For example, I could say "kristianc was like, OMG it is NOT a pause or a tic, it is SoCal dialect!" in a sarcastic tone and roll my eyes.
edit: This form of communication doesn't translate well into digital form - email, texting, etc. - unless both people are familiar with each other's body language and the dialect to visualize (at a conscious or subconscious level) the meaning.