Turning into a Frog Technique

Ninpou: Kaeru Kaeru no Jutsu is a Ninjutsu technique used by Jiraiya. Using his connection to toads, Jiraiya will form a hand seal and then touch the forehead of his target, turning them into a frog. This jutsu is useful as a means to scare another into talking. The true nature of the jutsu is unknown. The target may not actually be turned into a frog. They instead might actually have a frog summoned in their place under cover of the smoke, while they are sent elsewhere.