Tongue Twisters

Can you say these tongue twisters quickly?

1)Once a fellow met a fellow in a field of beans. Asked a fellow to a fellow if a fellow asked a fellow could a fellow tell a fellow what a fellow means. *pant, pant*

2)How can a clam cram in a clean cream can?

3)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.

4)What a terrible tongue twister,

what a terrible tongue twister,

what a terrible tongue twister...

5)How much ground would a groundhog hog, if a groundhog could hog ground? A groundhog would hog all the ground he could hog, if a groundhog could hog ground.

6)I thought, I thought of thinking of thanking you.

more tongue twisters at http://www.uebersetzung.at/twister/en.htm