My kids picked the names (with me having veto power, as I did not want to have to take 'Buttface' or 'X-Wing Fighter' to the vet. And yes, those were suggested names for two of our pigs! The kids also gave them middle names, presumably because they have middle names and figured the pigs should too! So far, we have had:
Frenzy Popcorn (Frenzy out of Transformers, and Popcorn because she was a bouncy little baby and went popping all over the place.)
Linney Cupcake (Linney from Wonderpets and I'm not sure where she got Cupcake from, but she was about four at the time and insisted that the name was 'Linney Cupcake.'
Sundae Vanilla (my middle child decided that she looked like a butterscotch ice cream cone, so we named her Sundae... and Vanilla seemed to go with that.)
Hadley Cupcake (our new little one was named Hadley by my son. He is an old-school horror/sci fi fan and the name of the colony overrun by aliens in the film Aliens is Hadley's Hope, so he got the name from there. Cupcake as a middle name was in memory of Linney, as we all miss her a lot!)