This one takes some decoding. The clues can be found on Porkbeard's pirate get-up.
On his hat, Strong Persuader. That's Robert Cray's handle.
On the guitar, SRV. For Stevie Ray Vaughn.
The buckled boots give us BB and T Bone, for B. B. King and T Bone Burnett. (Or T-Bone Walker?)
And on the hem of his pirate-type coat, Slow Hand. Eric Clapton.
In other words, he is not only a pig dedicated to the prospect of death-by-barbecue, but also a living tribute to kings of the guitar. In other other words, he is a burnt offering on the altar of the guitar gods. Which means… Well, we don't know what it means.
The pig is primed for sacrifice. It's what drives him. In clothes marked with the names of his idols, he plays his swan song. The smoke from his burning flesh will—must!—somehow, reach the land of his gods. In death, he can commune with the forces that gave his life meaning.
Like we said, we don't get it either.
Addendum: Finally! An excuse to use this one.