There was a 82 year old man who had to pee and couldn’t hold it in, so he went to a train track to do it. While he was pissing, a cow from the air crushed him. His death certificate literally says “Death by a flying cow”. It turned out that cows were crossing a track and the train hit one of the cows full speed, so it was sent flying right towards the man. He ended up passing away.
Or a not so forceful solution: Go into the Ctrl + Alt + Del menu, and press the power button while holding down Ctrl. Now you can do an emergency shutdown.