Hidden Leaf Village Grand Sports Festival!

Konoha Annual Sport Festival is a Naruto OVA about the Rookie 9 taking part in a sports competition in which the winning team gets a paid vacation for a week. Unfortunately for Naruto, he is hit with a severe case of stomach pains and diarrhea, leading to him making dashes for the bathroom in between games, only to be foiled each time by one of the other ninja who are mostly unaware of his condition.

Trivia

 * Many seldom seen characters (at the time of release) can be spotted in the line for the bathroom including the Sound Four, Itachi, and Kisame.
 * The song in the ending credits is all about Naruto having diarrhea.
 * During one of Naruto's trips to the bathroom, the Fourth Hokage is seen walking in the hall.
 * Kabuto and Orochimaru were also seen.
 * This was before Sasuke left.