Is the sound of a whiplash caused by breaking the sound barrier?
Dear Straight Dope:
What is the sound a whip makes? I once heard it was the tip of the whip breaking the sound barrier.
SDStaff Dogster replies:
Yep. The noise is actually a mini-sonic boom as the tip of the whip breaks the sound barrier. Now behave, or you won't even hear it coming.
— Yer dog