It's Not Friend, It's Colleague

I was in a conversation with Jia Jia before their nap today. Our conversation goes like this:-

Myself: Jia, what did you eat just now? Did you meet papa's friend?

My lil' Missy has not yet answered but there is another voice saying this:

di-di: mum, it's not friend.

Myself:Not friend?

Di-di: ya, it's not friend, it's colleague.

Imagine, a 2.5 years old boy knows what is colleague means!