The Sound of a Happy Hop
ピョンピョン (pyonpyon) is the Japanese onomatopoeia for light, repeated hopping — both feet leaving the ground in a small, springy jump. It is the default word for rabbits, frogs, excited small children, and cartoon characters bouncing around in joy. ピョン on its own means a single hop; ピョンピョン is the repeated, continuous version.
ピョンピョン is usually classified as gitaigo (擬態語) — onomatopoeia for states and manners rather than real sounds. A hopping rabbit makes almost no audible sound, so the word paints the visual bounce rather than an acoustic event.
When to Use ピョンピョン
Use ピョンピョン for: (1) Animals that hop — rabbits, frogs, kangaroos, birds, grasshoppers 「うさぎがピョンピョン跳ねる」(usagi ga pyonpyon haneru). (2) Excited or happy jumping by people — a child who just got good news, someone receiving a gift, a character jumping for joy 「嬉しくてピョンピョン跳ぶ」(ureshikute pyonpyon tobu). (3) Cute repeated bouncing — girls in anime doing a playful hop-in-place, idols on stage, chibi characters. Compare with ピョンと (pyon to, a single hop) and ジャンプ (janpu, a bigger athletic jump without the cute nuance).
Fun Fact
The word is so associated with rabbits that Japanese parents and preschool teachers use a rhyming song — 「うさぎさんがピョンピョン」— as a classic movement warm-up in kindergartens and children’s TV shows like Okaasan to Issho. Kids learn to literally hop on ピョンピョン. The Ghibli film My Neighbor Totoro even formalized this cultural link: the bouncing-on-Totoro scene is one of the most-referenced “ピョンピョン moments” in Japanese animation, and it is the image most adults will picture if you simply say the word out of context.
Examples
In Anime
Is the Order a Rabbit? (ご注文はうさぎですか?)
The entire show is built around rabbits and cute girls, and ピョンピョン is the signature sound effect every time Tippy, Anko, or any of the café's rabbits moves between chairs — often doubled as a cute bounce animation when the girls themselves get excited and mirror the hop.
My Neighbor Totoro (となりのトトロ)
In the iconic scene where Mei and Satsuki bounce on top of the giant sleeping Totoro, their joyful ピョンピョン hop is what wakes him up. It is also the onomatopoeia used when Totoro himself performs his tree-growing leap — the word that Japanese audiences instinctively hear in that moment.