Английский словарь американских идиом - snap one's fingers at

{v. phr.} To show contempt for; show no respect for; pay no attention to; scorn; disregard. * /John snapped his fingers at the sign that said "Do not enter," and he went in the door./ * /The highway sign said "Speed limit, 35 miles per hour," but when a driver snapped his fingers at it by going 55 miles an hour, a motorcycle policeman arrested him./