When it comes to undesired braking behaviour, the F70/100 with its taxi brake system has to be rather high up the list.
Presumably as a measure to save brake lifetime, under a certain taxi speed (may have been 30kts, but it has been a while) and below a certain brake pedal deflection, only one of the two wheel brakes on each main wheel is actually delivered pressure. However, if that deflection threshold is crossed, the valves are opened and the measured pressure is applied not only to half the brake units but to all of them. A smooth (ish) braking process will thus be turned into the equivalent of hitting a brick wall, loose stuff tumbles forward through the cabin etc.
And to make life extra interesting, this system was not installed in all the aircraft of the fleet - when it reared its head, it was occasionally a little bit unexpected and resulted in the application of strong language.