Sundaes

"Any reviewer who expresses rage and loathing for a novel is preposterous. He or she is like a person who has put on full armor and attcked a hot fudge sundae."

Vonnegut must have really enjoyed reading novels and respected them despite what they offered, enough that he was willing to bash those who raged against them for whatever reasons they may have. In the above quote, he uses "hot fudge sundae" to represent the novel. The novel is something written by an author to make a point, or to just express their imagination in words through a story. All the novel aims to do is give the reader something to enjoy, something written for the audience. Whether one likes the novel or not, one should at least have respect and keep their mouth shut if they did not enjoy the piece. Like a sundae, all the novel does is give one something to enjoy. If one doesn't, then don't bother mentioning it, much less whine about it. Those who criticize novels are like people putting on a full suit of armor and smashing the sundae, which is completely unnecessary. It's like the famous saying: "If you don't have anything good to say, then don't say it."

Humour

So Vonnegut, you think you're funny? Well, I think so too, therefore we're in the same boat. At some point in the novel, I forgot all about Billy Pilgrim's unfortunate string of events thanks to the humour you accompany him with. Honestly, who puts time travel into a book about a guy caught up in a war? The combination may seem awkward and unfitting, but to me, that's exactly why it's funny. You don't see any Powerpuff Girls appearing in any Pokemon episodes, now do we? But if it did happen, it'd be quite the hilarious situation. The strange mix of science fiction along with your "true" tale of what happened creates a more light-hearted situation which distracts from the sad, melancholic Billy Pilgrim.
One thing that does bother me is the "so it goes" that accompanies all the deaths mentioned. To me, that isn't really funny, though I'll admit the part where you mentioned the "dead" champagne was clever and made me chuckle. Another thing I find funny about your work are the characters around Billy Pilgrim when he gets captured by the Germans. This may sound mean, but I find the way that the others treat him as funny. In the boxcar when Billy is trying to sleep, no one wants him around since he kicks and yells. A few people respond one after another, telling Billy "Not with me." This leads him to sleep standing up, which if one envisions, looks quite funny. You can't forget when Roland Weary dies. And you better not forget who killed him too- Billy Pilgrim. Everyone knows it, he's the culprit. What's funnier than blaming someone for your death and making sure no one forgets? In my opinion, not much.

Homicide

For the sake of Slaughterhouse Five, let's kill time...


and do our work.

"As if you could kill time without injuring eternity." 
~Henry David Thoreau, "Economy," Walden, 1854