Continuity mistake: In the beginning when Jimmy is singing he leans down to Vanessa very briefly and is not singing.
Continuity mistake: The mud stains on people's clothing is constantly changing size, location and colour during the game of football.
Revealing mistake: Numerous times throughout the film the CGI used to show Calvin's height is very obvious. An early example is when he climbs on Percy's back to look in the window.
Continuity mistake: At the hockey game, Greg is seen when Calvin is biting the player's ear, but when the player starts stomping Calvin, Greg is no longer seen.
Answer: He isn't seen but given the ruckus going on at the time it's highly probable he just stepped out of the way and is hidden in among the crowd.
Ssiscool ★