humour and english

A girl from Tibet went to Shanghai for a job interview. To test her English, the boss asked her to construct sentences with green, pink, yellow, blue, white, purple and black.

She answered:

I hear the phone green green, then I go and pink up the phone and I say 'Yellow, blue's that? White did you say?? Oh, wrong number, don't purplely disturb people and don't call black, okay?'

Boss said:

You can go 'black' now, and no need to wait for phone 'green green'...