What happens when teammates of a batter who just hit a home run leave the dugout to celebrate?

When a batter hits a home run, the play is considered dead once the ball leaves the field of play. During this dead ball period, players are allowed to leave the dugout to celebrate the home run without penalty. This activity does not disrupt the game since the run has been scored, and the players celebrate in a manner consistent with the nature of the play.

Celebrating a home run is a common practice in baseball, as it fosters team spirit and camaraderie, and since the ball is dead at this time, it is permissible for teammates to join in the celebration outside of the dugout. The rules allow for this kind of celebration as it does not interfere with the game flow or pose any safety concerns. In summary, leaving the dugout to celebrate a home run is acceptable within the context of the game once the ball is dead.