“How now brown cow”
Is a sentence we can practise
To make sure that we speak correctly
And form our vowels like elastic
A, E, I, O
My jaw is aching now
U can do it if you want but
Please don't ask me how
“The rain in Spain falls mainly on the plain”
Is another great example
Trying saying it after a couple of swigs of wine
Two bottles should be more than ample!