What is said to be the toughest tongue twister in the English language?

Answer 1

not sure what the hardest is try the longest word in the world that's HARD to say but a hard toung twister is:

Bettie bought a bit of butter,

But she found the butter bitter,

So she bought a bit of better butter,

To make the bitter butter better.

ITS HARD!

Answer 2

The toughest tongue twister in the English language is "The sixth sick sheik's sixth sheep's sick." It is challenging because it contains many similar sounding words and repetitive sounds that are difficult to pronounce quickly.