Dairy Crest's Frijj is taking "quirky" to a whole new level with the launch of a competition to win a ­person.

From Monday, shoppers who purchase a bottle of chocolate, strawberry or ­banana Frijj milkshake will have the chance to win Warren an actor who has been cast as Frijj's work ­experience boy for a day. They will be able to ask Warren to do anything they want within reason and the law, and footage will be posted online.

"Frijj always does things differently so it's really important to offer loyalists a fun promotion that captures their imagination," said Andy Saitch, Dairy Crest liquids sales director.

Shoppers who enter the giveaway by texting a unique on-pack code or entering it online will also be in with a chance of winning one of 83 other prizes, such as a 3D TV, Camcorder, Xbox Connect or a year's supply of Frijj.