be like a kid in a candy store
US /bi laɪk ə kɪd ɪn ə ˈkæn.di stɔːr/
UK /bi laɪk ə kɪd ɪn ə ˈkæn.di stɔːr/
1.
to be extremely excited and happy about something, often to the point of being overwhelmed or giddy
:
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When he saw all the new gadgets, he was like a kid in a candy store.
•
She was like a kid in a candy store when she visited the art supply shop.