fling (one's) hands up in (some emotion)(redirected from fling their hands up in)
fling (one's) hands up in (some emotion)
To toss or jerk one's hands upward to convey some emotion. As the kids ran around the room shrieking, Mom just flung her hands up in exhaustion and shook her head. I can't hear what they're saying, but it looks like Dad just flung his hands up in anger, so that's not a good sign.
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