Ananova:

A radio joker tricked an Asda worker into announcing 'Tesco is cheaper' over the tannoy of a packed store.

A recording of the announcement is now sweeping the internet, reports the Sun.

The unknown DJ called the store asking for help finding his missing daughter 'Tess Cosis-Cheaper', who he said was inside.

The customer service worker didn't spot the joke and immediately put out a call for the bogus girl - repeating her name twice.

Bosses at the store in Charlton, London, last night confessed they had no idea they had been duped.