My pet hates are:
(Normally heard when two teenage girls are talking to each other) "And she was like, and I was like, and she was like, and I was like oh my God"
The other irritating improper use of English (especially up here in North Lincolnshire) is when someone responds to a statement like - "I was going to go to the pub" with "Was yer".
My wife works in a local secondary modern school and if you'd seen a letter sent to a parent by the Head of English you would either die laughing or die of shame.
What on earth is happening?