指切りげんまん、嘘ついたら針千本飲ます（ゆびきりげんまん、うそついたらはりせんぼんのます）
Japanese vocabulary
Meaning: cross my heart and hope to die, stick a needle in my eye; pinky promise pledge: if you're lying, I'll make you drink a thousand needles
Japanese vocabulary
Meaning: cross my heart and hope to die, stick a needle in my eye; pinky promise pledge: if you're lying, I'll make you drink a thousand needles