My One Cent Worth of Thoughts

Struggling to put her swimming cap over her head. It slipped off for the 3rd consecutive time.
Me : (exasperated) why is your head so big today??
宝贝: I ate a lot of vegetables during lunch today. That’s why my head is so big.
Me : what does eating vegetables have to do with your head?!
宝贝 : all the vegetables went to my head. So it became bigger. I should eat less vegetables.

Is she trying to pull a fast one on me?!