tongue twister

The "Alias" alum tried her best with a tongue twister after a "small procedure" left her mouth numb.
John Bradley explained to Ellen DeGeneres why he now didn't "know what I know is true."
It may sound nonsensical but this jumble of words may just be the most tricky tongue twister ever, leaving tongue-tangling classics like Peter Piper and the seashell seller on the seashore in the dust.
Speech errors, such as the ones caused by tongue twisters, can be used to understand how the brain processes and plans speech