A boy does a skateboarding trick in the air while holding the board with his left hand .
A sad boy does a skateboarding trick in the air while holding the board with his left hand .
A boy does a skateboarding trick in the air while holding the board with his left hand.
A sad boy does a skateboarding trick in the air while holding the board with his left hand.
It is impossible to tell if the boy is sad.
It is impossible to tell if the boy is sad .