I once got cramp in my calf muscle doing an emergency stop. I must have looked pretty stupid bent over the wheel, howling like a fool, then trying to walk once I got out of the car.
I once got towed along a country lane at 70mph in my Chevette, crapped myself and with no way to contact the tow'er had to put the brakes on and stop my car and pull the other to a stop before i died