Tongue Twisters

Let’s see if you can repeat the following 5 times in a row without having a slip of your tongue!

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!

Mr. Inside went over to see Mr. Outside. Mr. Inside stood outside and called to Mr. Outside inside. Mr. Outside answered Mr. Inside from inside and told Mr. Inside come inside. Mr. Inside said “NO”, and told Mr. Outside to come outside. Mr. Outside and Mr. Inside argued from inside and outside about going outside or coming inside. Finally, Mr. Outside coaxed Mr. Inside to come inside, and then both Mr. Outside and Mr. Inside went outside to the riverside.

We surely shall see the Sun Shine shortly. Whether the weather be fine, Or whether the weather be not, Whether the weather be cold Or whether the weather be hot, We will weather the weather whatever the weather, Whether we like it or not. Watch? Whether the weather is hot. Whether the weather is cold. It is weather, whether we like it or not.

She sells sea shells on the sea shore, but the sea shells that she sells, on the sea shore are not the real ones.

I wish to wish the wish you wish to wish, but if you wish the wish the witch wishes, I won’t wish the wish you wish to wish.