There's like a complete, like difference, though, between like, valley girls, and like, smart people substituting words, like.
No, seriously though. I don't sound like a valley girl. I just managed to get into this habit when I was 12 or so. It progressed from there. I think saying 'like' was more of an eighties thing, though. Bad times.
I'm still working on kicking this.
Lots of love,