When you were a kid it was hard to say 'truck'. Now as adults the English language has come full circle with a tongue twister to make us all look like bumbling idiots. Is this the world's hardest tongue twister?

"Pad kid poured curd pulled cod." 

To me, that looks like a nonsensical word jumble, but according to scientists (and they are always right) it is. So 'Suzie selling seashells by the seashore' is out of business now. The true test though is - can you say either of them 10 times fast without stumbling?