go crazy
US /ɡoʊ ˈkreɪ.zi/
UK /ɡoʊ ˈkreɪ.zi/

1.
to become very excited or enthusiastic about something
:
•
The crowd will go crazy when their favorite band comes on stage.
•
My kids always go crazy for ice cream.
2.
to become mentally ill or insane
:
•
After weeks of isolation, he started to go crazy.
•
The constant noise made her feel like she was going crazy.