Sam and Mark put celebrities cake decorating speed to the test in the Piping Challenge! How will they do, and can you do any better?
Think you can pipe quick enough? Send your entry in here http://www.bbc.co.uk/cbbc/joinin/jbo-piping-challenge
For more fun, CBBC games, shows, quizzes and great makes visit http://www.bbc.co.uk/cbbc/
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Junior Bake Off is a spin-off of The Great British Bake Off. Junior Bake Off is a competition...