指切りげんまん、嘘ついたら針千本飲ます
Meanings
1
pinky swear rhyme; cross my heart and hope to die, stick a needle in my eye
A children's rhyme recited while making a pinky swear (指切り). The literal meaning is a threat: if you lie, you must drink a thousand needles. Used playfully to seal a promise.
See also: 指切り
The children made a promise, reciting, "Cross my heart and hope to die, stick a needle in my eye!"
As they parted, the two linked pinkies and recited the full pinky-swear rhyme.