I will stick with a Big Mac... or Filet-O-Fish. There is no way it can be that tasty.
Wade Davis talks about fugu in "The Serpent and the Rainbow." He discovered that a controlled dose of fugu toxin will paralyze you, leaving you fully conscious but to all appearances dead. There's a law in Japan, actually, that anyone dying of fugu poisoning has to be held in storage for a certain number of days, just to see if they wake up. Anyway, that's how Haitian voodoo practitioners make zombies. Paralyze them and bury them alive, which will totally freak out anyone, then dig them up and keep them drugged on datura. The key is making the zombie BELIEVE that he's a walking dead man under the power of the voodoo priest.
Anyway, Davis says that done right, fugu will give you a bit of a buzz. It's one of those rare items, he says, that straddles the line between a food and a drug.