Porky (3)
'porky' is the definition.
(I've seen this in other clues)
This is the entire clue.
(Other definitions for lie that I've seen before include "A white one is considered harmless" , "Stretch out" , "Disinformation" , "Prevaricate or recline" , "Rest; falsehood" .)
(Other definitions for fib that I've seen before include "Little white lie" , "A harmless white lie" , "Petty falsehood" , "Small lie" , "One must be 20 [UNTRUE]" .)