snap your fingers
snap (one's) fingers
1. Literally, to press the tip of one's thumb and middle finger together and then forcefully slide them apart, producing a snapping sound, often used to attract someone's attention. Tommy, please don't snap your fingers like that at me. If you want my attention, just raise your hand, and I'll come over to you when I have a chance.
2. To make a sudden or impromptu decision that one expects others to adhere to or go along with. So what, you're just going to move around the entire country whenever she snaps her fingers? That doesn't sound like a very equal marriage to me.
snap (or click) your fingersmake a sharp clicking sound by bending the last joint of the middle finger against the thumb and suddenly releasing it, typically in order to attract attention in a peremptory way or to accompany the beat of music.
snap your ˈfingers
1 attract somebody’s attention by making a sound with your thumb and middle finger: Waiters don’t like customers in restaurants who snap their fingers and shout ‘waiter!’
2 show you do not care about somebody/something: He snapped his fingers at the committee and walked angrily out of the room.