Undated handout photo issued by West Midlands Fire Service, of firefighters working to release a YouTube prankster who cemented his head inside a microwave. PRESS ASSOCIATION Photo. Issue date: Thursday December 7, 2017. The 22-year-old and a group of friends mixed seven bags of Polyfilla before they poured it around his head, which was protected by a plastic bag inside the appliance. See PA story FIRE Microwave. Photo credit should read: West Midlands Fire Service/PA Wire NOTE TO EDITORS: This handout photo may only be used in for editorial reporting purposes for the contemporaneous illustration of events, things or the people in the image or facts mentioned in the caption. Reuse of the picture may require further permission from the copyright holder.