Summoning: Toad Mouth Bind[1]
Name
Kanji	口寄せ・蝦蟇口縛り
Rōmaji	Kuchiyose: Gamaguchi Shibari
Literal English	Summoning: Toad Mouth Bind
English TV	Ninja Art: Toad Mouth Trap
Debut
Manga	Chapter #147
Anime	Naruto Episode #85
Game	Naruto: Ultimate Ninja 2
Appears in	Anime, Manga and Game
Data
Classification	Ninjutsu, Space–Time Ninjutsu
Rank	A-rank
Class	Offensive
Range	All ranges
Hand seals	Snake → Boar → Rat → Dragon → Boar → Dragon → Tiger → Both palms on ground
Other jutsu
Parent jutsu	Summoning Technique
Users Jiraiya

A peculiar technique of partial invocation that summons only an organ: the esophagus of a great, fire-breathing toad from Mount Myōboku: Rock Lodging (妙木山・岩宿, Myōbokuzan: Iwayado), sending the enemy into his stomach. If activated inside a building or a cave, this trick can ensnare the enemy without them realizing it. In this interior, even the foothold is unreliable, the enemy finds themselves in a tight spot, having a hard time performing at their usual level of skill, and unable to find a proper response. The inside of the esophagus is highly flexible, and adhesive, and won't even allow liberty of movement. In time, the walls of flesh close in and envelop the enemy, dooming them to go inside the stomach where they will be digested.

Jiraiya could control the esophagus, causing it to expand, contract, or grow in whatever direction he wished. When first used, Jiraiya claimed that no one had ever escaped from this technique. Itachi Uchiha and Kisame Hoshigaki managed to escape when Itachi used Amaterasu to burn through the oesophagus, which is said to be fire-resistant.

Trivia

• In the video games, parts of the esophagus also spew fire, which fits with Jiraiya's description of the animal the toad esophagus originates from.
• 'Gamaguchi' (蝦蟇口; Literally meaning "toad mouth") is a Japanese name for a pouch or wallet, especially one closed with a metal clasp and used for small change. Naruto's own wallet is a reference to this word as well.^[1]

References

1. ↑ ^{1.0 1.1} Second Databook, page 210