To make a pinky promise, or pinky swear, is a traditional gesture most commonly practiced amongst children involving the locking of the pinkies of two people to signify that a promise has been made. The gesture is taken to signify that the person can break the finger of the one who broke the promise. The tradition appears to be a relatively modern invention, possibly as a continuation of older finger traditions.
In the United States, it is most common among school-aged children and close friends and has existed since at least 1860, when Dictionary of Americanisms listed the following accompanying promise:
Pinky swearing has an equivalent in Japan, where it is called yubikiri (指切り, "finger cut-off") and often additionally confirmed with the vow "Pinky swear, whoever lies will be made to swallow a thousand needles." (指切り拳万、嘘ついたら針千本呑ます, "Yubikiri genman, uso tsuitara hari senbon nomasu").
In Taiwan stamping after hooking pinkies has been common place for over 30 years.
In Italy a similar tradition is called "giurin giurello" or "giurin giuretto".
- Roud, Stephen (2010). The Lore of the Playground: One Hundred Years of Children's Games, Rhymes and Traditions. Random House. ISBN 9781905211517.
- Roud, Steve (October 29, 2010). "The state of play". The Guardian.
- "Pinky". Bartlett's Dictionary of Americanisms. googlebooks. 1860. Retrieved 2013-05-25.
- "The Korean Promise 👍"약속" (yaksok) | K-Drama Amino". aminoapps.com. Retrieved Aug 6, 2020.
- Media related to Pinky swear at Wikimedia Commons