Tongue Twisters it is a phrase or sentence which is hard to speak fast, usually because of alliteration or a sequence of nearly similar sounds. It helps develop speech skills & helps in speech therapy.
To get the full effect of a tongue twister you should try to repeat it several times, as quickly as possible, without stumbling or mispronouncing.
Alliteration is the repetition of initial sounds.
Peter Piper Picked a peck of peppers!
How many cans can a canner can, if a canner can can cans?
A canner can can as many cans as a canner can, if a canner can can cans.
A skunk sat on a stump and thunk the stump stunk,
but the stump thunk the skunk stunk.
Silly Sally swiftly shooed seven silly sheep.
The seven silly sheep Silly Sally shooed
These sheep shouldn't sleep in a shack;
sheep should sleep in a shed.