Tongue Twisters

Hey everyone.  In my G+T class, we have started a unit on public speaking and formal debate.  I figured it would be helpful to the class if I posted some suggestions for tongue twisters which help with articulation of speech.  Here they are.

Peter Piper picked a peck of pickled peppers.  Did Peter Piper pick a peck of pickled peppers?  If Peter Piper picked a peck of pickled peppers, where’s the peck of pickled peppers Peter Piper picked?

A skunk sat on a stump.  The stump thunk the skunk stunk.  The stunk thunk the stump stunk.

The sixth sick sheik’s sixth sheep’s sick.

I know "thunk" is not a real word, but it adds to the difficulty of the twister.  Enjoy the tongue twisters.  Personally, I think that last one is very devious.