Hardest tongue twister?

[nickster1]

a box of biscuits, a box of mixed biscuits and a biscuit mixer

 

[muffincakes]

Damn, I've been ninja'd.

That one's kind of easy for me

I'm surprised that no one has yet put this one:

Peter Piper picked a peck of pickled peppers, but if Peter Piper picked a peck of pickled peppers, where's the peck of pickled peppers Peter Piper picked?

Edit: I've been informed that the above is actually used to train children to say "P's," so I have no twisters

 

[Neonbob]

The sixth sick sheik's sixth sheep's sick.

Oh, you ninja-y rat bastardo! Did you get that from me, by any chance?

Also, just try and say purple ten times fast. I'll wait.

Sorry, goat...I got it from Guiness.
But I'd love to say I got it from you.

 

[Hargrimm]

Since I can't think of an english tongue twister, I'll give you a german.

Blaukraut bleibt Blaukraut und Brautkleid bleibt Brautkleid.

this one always gives me trouble, no matter how hard I try.

 

[Deadlock Radium]

These:

Spoiler: Easy Mode

Three witches watch three swatch watches. Which witch watch which
swatch watch?

Spoiler: Hard Mode

Three swiss witch-bitches, which wished to be switched swiss witch-
bitches, wish to watch three swiss Swatch watch switches. Which
swiss witch-***** which wishes to be a switched swiss witch-*****,
wishes to watch which swiss Swatch watch switch?

 

[NuclearPenguin]

Damn, I've been ninja'd.

That one's kind of easy for me

I'm surprised that no one has yet put this one:

Peter Piper picked a peck of pickled peppers, but if Peter Piper picked a peck of pickled peppers, where's the peck of pickled peppers Peter Piper picked?

Edit: I've been informed that the above is actually used to train children to say "P's," so I have no twisters

Am I weird if I changed every "Peter Piper" to "Pimp Peter"?
Anyway, I dont really know any good.

 

[Parallel Streaks]

Peggy Babcock stood upon the balcony inexplicably mimicking him hiccuping and amicably welcoming him in.

We had to say that in our drama lessons every day. That's why my friends always point out my annoyingly good diction.

 

[Murlin]

One single french word:

enregistrer

took me year before I could say it almost correctly

 

[HarmanSmith]

Ethylmethylether. Say it enough times and you feel retarded. Actually, there are a few thousand compounds in organic chemistry that are a ***** to say.

 

[Karlaxx]

The OP's one has me stuck. I prefer to scream 'RUBBER BABY BUGGY BUMPERS" in a terrible Ahnold impersonation.

 

[Wardnath]

Bugs, black, blood.

Say that as fast as you can.

 

[Broady Brio]

this:

My god! My tongue! It's gonna blow!!!

 

[tjarne]

Since I can't think of an english tongue twister, I'll give you a german.

Blaukraut bleibt Blaukraut und Brautkleid bleibt Brautkleid.

this one always gives me trouble, no matter how hard I try.

I'm voting for this one. It takes me back to the time when I studied German in school, its darn impossible.

 

[SeanTheSheep]

The sixth sick sheik's sixth sheep's sick.

I read somewhere that this is statistically the hardest tongue twister ever.
I can't say it at all, except very very slowly.

 

[RobThePrezodent]

my two favourites are "unique new york" and "salmon sandwich"

 

[Zorg Machine]

sex laxar i en lax ask.
it's swedish for six salmons in a salmon box (yes I know sex=6 in swedish, you don't have to point it out).

 

[Marik2]

Well I don't know Japanese, but this has my vote for hardest tongue twister.