The differences in generational speaking habits is quite stunning.  My 40 year old daughter is "normal" in her speech, diction and has no real slang usage that I can detect that's out of the ordinary.

My 33 year old daughter (and mostly raised in CA)? That's different:  "she's like, he's like, you know, she's sorta like, like, like that guy who's like, you know, on that show!"      Now this kid is smart - she's a RN and makes good money and is a great nurse.  But how she got to be valley girl in N. CA I don't know.

My son (2nd marriage) is 19, very quiet, went to Christian School and has almost no slang - other than technical jargon (that doesn't count).  He uses very few words to communicate but their put together well.  He uses short cuts.  If I ask "do you want to go to the movies and then to dinner?"   Answer:  No.    He isn't rude at all.  But I'd say  No, not tonight but maybe later in the week.  

He really means No, maybe later in the week, but just can't quite form the words.  

Me?  My English diction and language is superb!
Liar.