Concerns have been raised over a doll being sold at Toys 'R' Us stores in the United States.

The doll, part of a set known as the "You and Me Interactive Triplets", speaks in baby babble - except for one phrase which has parents asking questions.

As seen in the video above, the doll makes a sound which sounds alarmingly like the phrase 'crazy b*tch'.

In Arkansas, a lawsuit has been filed against Toys 'R' Us, with one father claiming that his daughter heard the doll and started repeating the B-word.

While Toys 'R' Us are happy to issue refunds on the dolls, there are no plans to pull them from the shelves.