According to my niece, "Yeah, no" is popular now w/ zennials. Also the laughing crying emoji is OUT, to be replaced with the hipper skull emoji to show amusement. As in, this is so funny it killed me.
"Yeah, no" was definitely a thing when I was in high school, and that was 10 years ago at this point. Maybe it's one of those all modern youth culture flows from the US West Coast things.
