Would you rather by psychoanalysed by someone speaking gibberish?
To me, it says that there is some kind or rhyme or reason underlying Pinkie's randomness. It reminds me of Pinkie's ability to figure things out intuitively. I kinda imagine that somewhere in her head there is a psychologist advice on ponies behaviour.
Also, I'm glad that someone understand Big Mac's situation haha, even if it is only the author in this case!
panels 6 & 8 are my favorites, they are so well drawn, and that maniacal smile in 8, good thing Pinkie did not become a cannibal, but then I have not read all the comics yet...., keep up the great work!