PNP, i.e., party and play, usually means crystal meth.  I don't do that privately, but I have indulged with some providers before and I've found it to be very fun, hot, etc.  Crystal meth is definitely dangerous so if you're a novice, I would tell you to avoid at all costs.  If you know what you're getting into, it can be intense.

Personally, I'd love to know of any providers who PNP (tgirls or GG) who are still decent providers.  (I know they're out there.)