Tongue Twisters
A tongue-twister is a phrase that is designed to be difficult to speak properly.
Usually tongue-twisters rely on similar but distinct phonemes (e.g. s and sh), unfamiliar constructs, or other features of a language.
Tongue Twisters, amazing fun with friends and family
Tongue Twister of the Day
A flea and a fly flew up in a flue. Said the flea, "Let us fly!" Said the fly, "Let us flee!" So they flew through a flaw in the flue.