New Sexy Technique

During his two-and-a-half years of training with Jiraiya, Naruto Uzumaki on one occasion uses the Sexy Technique against Jiraiya; Naruto transforms into a woman wearing a revealing devil outfit and short shorts. After seeing it, Jiraiya encourages Naruto to take a form that is wearing a thong, which he believes will give him inspiration. Confusing a thong for a mawashi, Naruto transforms into a sumo wrestler. Jiraiya is first startled, then disturbed, then angry to see it, having expected another scantily-clad woman. He complains bitterly until Naruto, irritated, uses the form to knock Jiraiya out.

Naruto brags about this "new" Sexy Technique when he returns to Konohagakure, claiming it's far superior to the original. He is attacked by Sakura Haruno before he has a chance to demonstrate it.

Trivia

 * This technique debuts in "The New Erotic Ninjutsu Completed!!", an omake included with Kai no Sho. The omake is later adapted for Naruto: Shippūden episode 188.