A word typicaly used in Japanesse animes by younger female anime girls to their older brother or just by anoyingweeaboos who think they know the whole damn language.
This term is used in Japanese hentai normally filming a young child with a fold man this man is ready to have sexual intercouse with the young child (which in the west is considered pedophile) this man is then told βoni chan I have a dickβ normally the man is not phased by this and goes in for the tight pum.