A .44 Magnum Revolver that jams/fires backwards. My sneezes sort of backfire. All the time. I have to brace myself for them and my entire body seizes up just before I sneeze, but then I do sneeze and there's almost no sound and I'm left gagging as all the gunk meant to fly out of my nose and mouth goes back down the other way and gets stuck in my lungs and throat. It's absolutely horrible.