eyes are out on stalks
US /aɪz ɑr aʊt ɑn stɔks/
UK /aɪz ɑr aʊt ɑn stɔks/

1.
눈이 휘둥그레지다, 깜짝 놀라다
to be extremely surprised or shocked, often with one's eyes wide open
:
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When she saw the huge diamond ring, her eyes were out on stalks.
그녀가 거대한 다이아몬드 반지를 보았을 때, 그녀의 눈은 휘둥그레졌다.
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The children's eyes were out on stalks when they saw all the presents under the tree.
아이들은 나무 아래의 모든 선물을 보고 눈이 휘둥그레졌다.