叉燒包

i brought cc to shop for grocery shopping. i gave her 叉燒包 as snack. while she was enjoying her snack in her stroller, i was waiting for my turn to order some meat. suddenly, she said"叉燒包 !!" loud and clear. another lady and I were shocked by the sudden voice.

 

i wonder where did she pick those words. could her daddy teach her earlier on or she overheard me when i was ordering 叉燒包?