A man walks into Bunnings... he picks up a can of fly spray ....
A man walks into Bunnings... he picks up a can of fly spray .... And he says 
Is this stuff good for mosquitoes?’ No, comes the reply. It kills them.
English is used imprecisely in normal conversation. Apart from using different letters to form the same sound, like ough ... rough, bough, though, cough .... we confuse ourselves and visitors with incorrect punctuation (putting apostrophes in all the incorrect places) to the famous yeah nah / yes no, to begin an answer. This latter expression has to be explained to U.S. armed forces working with their Australian counterparts.
Let us go for a beer..... time passes .. you said a beer and we have drunk at least four. I did not say ONE beer, I said a beer.
Most of us either ignore or can decipher bad grammar. What happens, I ask, when the realisation dawns on me that store ‘assistant’ cannot fluently read or describe product information; or give change by subtraction? Now, I’m a local, so what hope for tourists? 
​​​​​​​But wait.... those among us who have young relatives. Have you ever been in a position to see a SMS (text) of theirs? Is there a new ‘word’ for what this language is, and will it become universal?
 As my Good Friend and mentor said ‘Don’t worry Ross, you and I will be dead before it matters’.  Profound, Alex.