like a child in a sweet shop

like a child in a sweetshop

So excited about one's surroundings that one acts in a childlike or silly way. Primarily heard in UK. Liam loves football so much that he's like a child in a sweetshop any time he steps into the stadium. She looked like a child in a sweetshop being able to look at so much world-class art in one place.
See also: child, like, sweetshop
Farlex Dictionary of Idioms.

like a child in a sweet shop

BRITISH
If you are like a child in a sweet shop in a particular situation, you are very happy and excited because of something you can do or have, and often behave in a greedy or uncontrolled way. With so many options before me, I was like a child in a sweet shop. Note: The usual American expression is like a kid in a candy store.
See also: child, like, shop, sweet
Collins COBUILD Idioms Dictionary, 3rd ed.
See also:
  • like a kid in a candy store/shop
  • like a child in a sweetshop
  • be like a child in a sweetshop
  • sweetshop
  • be like a kid in a candy store
  • like a kid in a candy store
  • silly as a wheel
  • (as) silly as a wheel
  • get (one's) bearings
  • get one's bearings