what the heck is Bo Luo juice?

Just came back from a Shanghai flight..

Moi had this Chinese passenger asking what juices we have on board... happily, moi replied in mandarin that we've got apple, orange, tomato and pineapple juice.

Man: Do you have Bo Luo juice?
Moi: No sir. We do not have Bo luo juice on our flight
(moi have absolutely no idea what the heck is "Bo Luo" juice)
Man: Isn't that Bo luo juice on your cart? (pointing at this juice carton)

Moi looked...

True enough, Moi actually have a carton of Bo luo juice on my cart!!!

*faint*

FYI: Bo Luo 波罗juice is also known to us Singaporean as Huang li or feng li juice aka PINEAPPLE!!!

I felt so dumb -_-