Toughest tongue twister

Scientists from the Massachusetts Institute of Technology (MIT) have come up with a string of words so difficult that test subjects couldn’t even finish it.

“Pad kid poured curd pulled cod” stumped participants in a recent study so badly that some of them simply stopped talking altogether when they tried to say it.

The phrase — which was deliberately crafted to induce a kind of speech mistake that linguists call “double onsets” — is unlikely to come up in everyday conversation.

Mistakes caused by tricky phrases offer insights into how the brain processes speech.