There's a lot of rejection letter humor on the Internet. The best of it is put there by people who reject the rejection letters rather than letting the letters drag them down into drunken despair, which is just what the bastards who sent them want.
I came across this classic today. It's probably been circulating in cyberspace for a long time, but I hadn't seen it before.
And I like this rejected writer's sardonic reply style.
I'm still waiting to hear back from Beacon Press about my query concerning my own ultimate rejection letter. I'll keep checking the mailbox.