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A promise made between two people, more common among young people or children, sealed by shaking hands -- except only with pinkie fingers. The idea is that if the deal is broken, the culprit will lose his or her pinkie finger.

The pinkie or pinky finger is the smallest, or farthest from the thumb. Also spelled pinky swear.
"I swear I won't tell anyone!"
"Do you pinkie swear?" (holds out pinkie finger)
"Pinkie swear." (hooks pinkies together and shakes)
by Coell CMU October 24, 2007
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An eternally binding act of hooking pinky fingers together in an attempt to seal the deal of a promise that has been made.
I promise to never do that again!
Do you pinky swear?
by Melia May 4, 2005
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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."
by Josh Brown May 11, 2005
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a secret between losers; in a desperate act to have some sort of "inside joke" to get thier other friends jealous. didn't work. involves thing such as: jennifer root, dorm daze 2, and jordan.
"they'll never find out our pinky swear, boyzz"
"i swear i wont tell!"
by tehehe123 November 14, 2006
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to make out in a risque way (place, time, etc.)
Andy and I pinky swore in the back of the shed during strike.
by Tiffanie! March 24, 2005
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When you put your pinky finger deep inside a girl's vagina or ass and then bend your finger and pull.
I just gave some girl the world's deepest pinky swear last night.
by Known Unknown October 19, 2010
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