A YouTube prank gone awry resulted in a young man ending with his head stuck in a microwave full of wet cement, leaving the local fire department which leapt to his rescue "seriously unimpressed."

Axar.az reports that Jimmy Swinger, a 22-year old Briton and one of the authors of the TGFbro YouTube channel managed to land himself in a bizarre predicament after he deliberately stuck his head into a microwave oven filled with wet cement.

The YouTuber and his friends apparently intended to use the microwave as a mold, but then something went wrong and Swinger found himself unable to extricate his head from the cement. Fortunately, his friends managed to slip Swinger an air tube to enable him to breathe, allowing the hapless prankster to survive until the emergency services arrived.

Shaun Dakin, West Midlands Fire Service Watch Commander and the officer in charge of a response crew that rushed to Swinger’s aid, pointed out that “taking the microwave apart was tricky, because a lot of it was welded,” adding that his team had to call their technical rescue colleagues, according to Metro.

It took the five firemen about an hour to rescue the hapless YouTuber, leaving the fire service "seriously unimpressed."