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1.
If it Exists, there can and will be a My Little Pony of it.
Guy: Dude, check it out
Person: Yeah...What the Hell!?
Guy: Yeah that's right, Pinhead and chatter box Ponies
Person: but..but..but..
Guy: Rule 34 P
by Shwiggs Kirths April 24, 2011
 
2.
Rule 34p: There is a pony version of it, no exceptions

Used to describe the internet phenomenon of ponifying everything.

Obviously an alternate version of Rule 34 of the internet
Bob: "what the hell, someone drew Conan O'Brien as a pony"

Jane: "haha, rule 34p bro!"
by Jacob Ellinger September 02, 2012