... and it always makes me laugh!
Tongue-twister:"A sequence of words, often alliterative, difficult to articulate quickly." (Oxford English Dictionary)
Are our oars oak?
Black bug's blood.
Come kick six sticks quick.
Draw drowsy ducks and drakes.
Ed had edited it.
Fat frogs flying past fast.
Greek grapes.
He threw three free throws.
Irish wristwatch.
June sheep sleep soundly.
Knapsack straps.
Lovely lemon liniment.
Moose noshing much mush.
Nine nice night nurses nursing nicely.
Old oily Ollie oils old oily autos.
Preshrunk silk shirts.
Quick kiss. Quicker kiss.
Real rock wall, real rock wall, real rock wall
Sixish. Sixish. Sixish.
Thieves seize skis.
Upper roller, lower roller
Vincent vowed vengence very vehemently.
Which witch wished which wicked wish?
X-ray checks clear chests.
You cuss, I cuss, we all cuss, for asparagus!
Z
Here's a few links, if you'd like to try more ...
http://www.uebersetzung.at/twister/index.htm
http://thinks.com/words/tonguetwisters.htm
http://www.twisterking.com/
http://www.englishclub.com/pronunciation/tongue-twisters.htm