Nigel's Chinese

We were discussing if Nigel gets good Chinese training in his kindergarten class, so I called Nigel over to the dining room where we were having dinner.

Me: Nigel, do you learning Chinese in school?
Nigel: Yes.
Me: Tell us Nigel, what Chinese words do you know.
Nigel: (thinking)
Nigel: PEE-KU!
Everyone: (laughing away)

Nigel: Mummy, can I eat a biscuit?
Mummy: (still laughing)