He reports having seen someone suddenly start dancing while walking down the street. Others act as though they were performing on stage when carrying on an ordinary conversation. And some get so wrapped up in their thoughts that they don't even notice when they have come to the road, and don't watch for traffic.
比如說，走路走到一半，會突然扭動起身體來；講話的時候，像在演戲，還一直比手劃腳，走到路中心都渾然未覺，「害我開車提心吊膽！」