What are some tung twisters?

here are some examples:

Betty Butter

Betty Botter bought a bit of butter

The butter Betty Botter bought was a bit bitter

And made her batter bitter.

But a bit of better butter makes better batter.

So Betty Botter bought a bit of better butter

Making Betty Botter's bitter batter better.

Peter Piper

Peter Piper picked a peck of pickled peppers,

A peck of pickled peppers Peter Piper picked.

If Peter Piper picked a peck of pickled peppers,

How many pickled peppers did Peter Piper pick?

But if Peter Piper picked a peck of pickled peppers,

Were they pickled when he picked them from the vine?

Or was Peter Piper pickled when he picked the pickled peppers

Peppers picked from the pickled pepper vine?

How much wood would a woodchuck chuck?": How much wood would a woodchuck chuck

if a woodchuck could chuck wood?

He would chuck, he would, as much wood as he could,

and chuck as much wood as a woodchuck would chuck

if a woodchuck could chuck wood.