none of you p-shifters know how you shift?

Again Sherlawk, I'm forced to disagree.  There may not be any P-shifters on the web, but I like to think that's because they have better things to do with their time.  As for the existence/non-existence of the elusive p-shift, it seems the subject can neither be proved or disproved.  I'm not saying they DO exist, but I dislike seeing either side of the argument touted as absolute law.  Just because a person doesn't believe in something, does not mean that it doesn't exist.  Take the events of WWII for instance:  people today refuse to believe that they happened, but that doesn't make the holocaust any less real (especially for those who survived it.)  Another example is meteorites:  two-hundred years ago, it was known[/u] that rocks cannot fall from the sky - it was absolutely scientifically impossible.  There was proof lying about these scientists' feet for as long as the very concept of science existed - but they all knew that it was "impossible", and so did any civilized human being.  We know today just how wrong we were then, too.

Point being in all of this rambling is that, as much as we (especially in Western Civilization) absolutely hate to believe it, we do not in fact, know everything about everything.  I daresay that we're not even close.  Even with the basics.

~ Loup

just throwing it out there since i've read plenty of people claim to be p-shifters. So I just asked.

There are a ton of people that claim to P-shift on the web.  Most (if not all) of them are full of crap.  That's the problem with a medium where anyone can claim anything as true.  Take a look at http://www.snopes.com for hours and hours of examples of people claiming really really dumb things via the Internet.  Sorting the wheat from the chaff on the Web is practically a herculean task.  I think that's part of the root of why this site was formed - it gives multiple truths from multiple points of view, and allows the reader to determine what is "truth" for him/herself.

~ Loup

In theory, if you had the ability to P-Shift into one thing, there would likely be a way to modify it into other things, like when you Cameo-Shift.  But as I said, it's only in theory, as P-Shifting is "impossible" (reason for quotes)

Yes.  There is no way to P-shift, or at least that anyone knows of.  There have been claims and rumors, but never even a shred of evidence backing them, thus the people who (probably falsely) claim this are ridiculed and usually get banned.  Mentally is another story, that can be done to an exceeding degree.  With practice, I have no idea what the limit there is, or if there is one.  A mental shift seems to have infinite potential in infinite directions (in 5 dimensions!)
As I said though: P-shifting, for the purposes of this discussion and probably everyone here, is impossible.