In aircraft not designed to fly at or above the critical Mach number, shock waves in the flow over the wing and tailplane are sufficient to stall the wing, make control surfaces ineffective or lead to loss of control such as Mach tuck.

Then he said to Gehazi, Tuck your cloak into your belt, take my staff in your hand, and go your way. If you meet any man, don't greet him and if anyone greets you, don't answer him again. Then lay my staff on the face of the child.