The term "P.W.C." (P-"Dub"-C) or simply (P-Dub) stands for "Proceed With Caution", and is spoken when smoking a pipe, to warn others that everything in the pipe is almost burnt, and you may inhale some ash.
"Ay dogg, P.W.C. (P-"Dub"-C) (P-Dub) on that bowl, its about cashed"
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