Definition of a pincal. 

 A Pincal is a street word used around Kent and SE London that started after a man called Andrew John Kennedy started calling people this as a term of reference. 

 the phrase means a force to reckoned with - either as a a positve person who inspired or as someone who was bordering on evil in terms of being a bullying and they needed to stopped.  So, can be used to describe someone in a good or bad light but the key is the intonation in the voice. 

 Andy himself is the original Pincal.