Oops! You need to enable JavaScript in your browser to start watching. Guidance: N/A Disable parental controls Enable parental controls CITV HOW Series 1 - Episode 10 Doctor HOW demonstrates how to make explosive crisps, Vick and Sam stop two tractors with nothing more than paper, and the team have a decorating challenge disaster. Fri Friday 25 Dec 8.25pm 30 mins 26 days left Share this episode: Copied to clipboard Share on Facebook Share on Twitter Copy link to share