A shockwave that hits me out of nowhere. A dreadful surprise that comes with "mini gifts." I shiver, my hearts beats hard, I breathe fast and heavily, and I can't think straight. If it gets bad enough, it ends in a panic attack (luckily these are rare). I cringe at the sensations that have been felt during such a process (especially when they happen while I'm driving). Maybe that's why some people thought they were dying when having a panic attack...