A way of opening a folding knife quickly by 'flicking' your wrist rather than using the thumb stud (or thumb hole on some models). This is not advisable with poor quality knives but is better reserved for higher end brands like Benchmade, Strider, etc.
The short form of the term "flaccid dick" used to replace the traditional "pussy" to refer to someone as weak by those who agree with Betty White that "Vaginas can take a pounding".