snap one's fingers at

snap one's fingers at idiom
Treat with contempt, scorn, disregard, as in Peter just snapped his fingers at the speed limit and drove as fast he liked, or Joanne snapped her fingers at the rumor about their bankruptcy. This expression alludes to the gesture of striking one's finger against one's thumb, thereby making a sharp noise. [Early 1800s]

The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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