AN UNBIASED VIEW OF WEED IN PUERTO VALLARTA

I know that this may be a taboo issue but I just wished to know. I'm about to PV for any holiday of fun and leisure, but I actually don't want any trouble either. If accidentally whilst I am in PV and someone walks around me since they often do, and ask if I would like some pot or weed(or whatsoever They might call it) If a policeman should really