Tongue Twisters

I think the tongue twisters can help us to improve the way to pronounce the words. Also it helps us to speak faster. In my personal learning I try to look for tongue twisters with letters that are kind of difficult to produce for example: I can think of six thin thing, but I can think of six thick things too; this tongue twister has the th letters and I have to make the  sound. I like to practice this sound. In addition there are lots of tongue twisters that you can find in English books or through out Internet here I have a URL of a website that has tongue twisters for kids and  adults. http://www.buzzle.com/articles/tongue-twisters-for-adults.html


Example:

If you understand, say "understand".

If you don't understand, say "don't understand".

But if you understand and say "don't understand".

How do I understand that you understand? Understand!