British tongue twisters:

United States twin-screw steel cruisers.

I shot three shy thrushes. You shoot three shy thrushes.

The rain ceaseth and sufficeth us.

A wicked cricket critic.

Many an anemone sees an enemy anemone.

All I want is a proper cup of coffee,
Made in a proper copper coffee pot.
You can believe it or not —
I want a cup of coffee
In a proper coffee pot.
Tin coffee pots or
Iron coffee pots,
They’re no use to me,
If I can’t have a
Proper cup of coffee
In a proper copper coffee pot
I’ll have a cup of tea.

Ken Parkin’s 1969 Anthology of British Tongue-Twisters is arranged anatomically, so to speak, according to the part of the mouth that gets the workout. These are listed under “Two Lips”:

Bill Badger brought the bear a bit of boiled bacon in a brown bag.

Gig-whip. Gig-whip. Gig-whip.

The broom blooms when the bluebells bloom.

And “Weak writers want white ruled writing paper.”