Unforgivable! A Total Lack of Respect!

is episode 90 episode of the original Naruto anime.

Synopsis
While Tsunade has dinner that night, Jiraiya and Naruto arrive at the same bar. Suspicious of Jiraiya's reason for looking for her, Tsunade asks what he wants, to which he replies that Konoha wants her to be the new Hokage. She rejects the offer, saying anyone who would willingly take the title is a fool. Naruto, enraged that she would disrespect the title of Hokage and those who have held its position, challenges Tsunade to a battle. The two step outside, but Tsunade quickly proves to be far out of Naruto's league. Unwilling to give up, Naruto readies his imperfect Rasengan for an attack.