1. bananas
(Example: I think she is going bananas)
2. berserk
(Example: The crowd went berserk when they heard the new song)
3. bonkers
(Example: You would be bonkers not to give her the job)
4. certifiable
(Example: Why is she talking like that? I think she is certifiable)
5. cuckoo
(Example: Mason is cuckoo for chicken. It’s all he eats)
6. ding-a-ling
(Example: The man that bought dog food for his bird is a ding-a-ling)
7. disturbed
(Example: I think he is disturbed in the head)
8. funny farm
(Example: You belong in the funny farm)
9. gaga
(Example: My daughter is gaga for Dora the Explorer)
10. irrational
(Example: Brian is acting really irrational)