when on/in a moving vehicle and there is a very sudden unexpected need to stop quickly, panic monkey braking occurs. this is the kind of braking where there is a cold sweat generated that drips (usually down your buttcrack) that you don't feel until after you are past the incident (assuming you didn't hit whatever it was that you were braking to avoid).

When you eat dirt for the first time and leave your family to build a shack in the woods