If you thought "She sells seashells by the seashore" was hard to say three times fast, wait until you get a load of what scientists are calling the world's hardest tongue twister.

Scientists at MIT believe that they've created the world's hardest tongue twister, which they engineered based on their research into which phonic combinations cause people the most difficulty.

What's the phrase? Pad kid poured curd pulled cod.

Try to say it. Seriously. It's nearly impossible to say it properly even one time, let alone ten times. In fact, I think I'm just going to wander the halls today asking people to say it and see what happens.