I've seen some weird things in code comments, but with RSpec, you can take programming humor to a different level.  Don't let your customers see these, though.  Here are a few RSpec specifications gone completely wrong:

#this crap needs to be refactored. it makes no sense.
describe QueryFacade, "when querying for opportunities" do
  it "should be refactored" do
    flunk
  end
end

That was from Terry, here's another I found floating around somewhere:

describe "Buffalo Bill" do
  it "places the lotion in the basket" do
  end
end

That a Silence of the Lambs reference, folks.  And finally:

describe "our insane customer Initech" do
  it "should stop asking for ridiculous features and make up their $%^*ing mind" do
  end
end

Waaaay too much free time...