eyes are out on stalks

US /aɪz ɑr aʊt ɑn stɔks/
UK /aɪz ɑr aʊt ɑn stɔks/
"eyes are out on stalks" picture
1.

avoir les yeux exorbités, être ébahi

to be extremely surprised or shocked, often with one's eyes wide open

:
When she saw the huge diamond ring, her eyes were out on stalks.
Quand elle a vu l'énorme bague en diamant, ses yeux étaient exorbités.
The children's eyes were out on stalks when they saw all the presents under the tree.
Les yeux des enfants étaient exorbités quand ils ont vu tous les cadeaux sous le sapin.