I think we're all aware of the intention of the innit at the end of every sentence, similarly the HRTs and y'knows, all being formed out of habit, but totally unnecessary.
Teenagers have no problems whatsoever understanding what their grandparents are saying, they know and fully understand standard English, it is just that they choose not to use it, particularly when they are with their bro's
(sic).
My sentence structures in my fifties are no different from people I am aquainted with who are in their 90s, similarly, my nephews and nieces, even my great niece, speak no differently. Their mode of speech only seems to change due to peer pressure and their need to not be flagged up as different.
Fortunately most of the bright ones grow out of the necessity to utilise pseudo street talk. I find it quite amusing to hear a surrey comprehensive school student talking as if he were brought up in the toughest part of Harlem or Watts, particularly when his dad is an accountant and his mum a marketing manager.
