Hardest Tongue Twister

'Pad kid poured curd pulled cod.'

A team of researchers from Massachusetts Institute of Technology say that this is the most difficult tongue twister in the world. Can you say it ten times fast? The psychologists who created this tongue twister said that people who attempted to say it either stopped right in the middle of saying it because it was too difficult or could only get through it once and weren't able to repeat it. If you couldn't get this one, give the others a try.

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