Top definition
A more serious version of your everyday, usual pinky promise. With the advanced pinky promise, it is understood that if said promise is broken, the promise breaker will have to remove their pinky by whatever means the betrayed promised chooses, and donate it to the MAF (Missing Appendage Foundation).
Sally Sue: I told Jack you liked him.
Susie Sal: But you Advanced Pinky Promise d!
Sally Sue: I know, but..
Susie Sal: That's it, off with your pinky..
by Leelo. January 03, 2010
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