New trick to get money

I've lived in Paris on and off for four years but today saw a variation on the beggar's cup that I hadn't seen before. It requires a road or street with a fair number of pedestrians passing by - but not too much of a crowd. The beggar sits down and uses a plastic see through cup in which he places a few copper centime coins. Then instead of waving the cup at you as you pass, or keeping the cup close to him, he places it in the middle of the pavement/sidewalk. Being see-through plastic, most people don't see it until it's too late by which time they have kicked it over, scattering the cup and it's meagre contents. The beggar looks hurt and/or indignant and invariably the unsuspecting passer-by feels awkward and helps pick the coins and the cup up and often adds one or two coins of his or her own by way of an apology. Anything above 5 centimes then goes in the beggar's pocket and he places the cup in the middle of the thoroughfare again. This technique guarantees the beggar some attention and therefore 50% of his mission has already been achieved.