Anyone got an old pair of motorbike boots they want to throw out? The shabbier the better. No useful life needed in them. Lemme know. Got a special ise for them, so I do. A one time use, and they will be of no value once complete, so you'd better not want them back.
You are on a beach. The sand ripples between your knees. A man tries to sell you a watch; you ignore him. Another man tries to sell you an unpleasant carving.
You call the police.
All is well.