it's not good as a tongue twister but...

[firecat]

how much fish would a feral cat carry if a feral cat could carry fish?

http://mfrost.typepad.com/cute_overload/2006/07/feral_cat_carry.html

work safe if work allows you to listen to excitable Japanese TV

Comments

[xiphias.livejournal.com]

I think you mean,
"How much fish would a feral ferry if a feral could ferry fish?"

I love that video.

[firecat]

Excellent!

[selki.livejournal.com]

"How much fish would a feral feline ferry if a feral feline could ferry fish?"