Based on the context and the answer, generate a question. 

Context: The driver and I went back and forth for about three minutes until Greg started doing these hand motion things . First he motioned like he was eating and then he did the ' make your eyes slanty thing ' like in the picture of the basketball team . I was smacking his arm , thinking ' OMG , I ca n't believe he did that ! ' The cab driver just smiled and said " Oh yes .

Answer:

He was mocking Asian people .



Why would Greg make gestures with his eyes ?