Definitions by Josh Brown

pinky swear 

an eternally binding promise (made by two people hooking their pinky thumbs together), which, if broken, will result in the culprit losing his or her pinky

"I pinky swore never to cover my mom's garden gnomes with carcinogens....I did and she cut off my pinky with a cleaver."

pinky swear by Josh Brown May 13, 2005