>>40
This is semantically wrong and your GHCi is ancient. Have a look at this instead:
Cyandragonfly:~ dongs$ ghci
GHCi, version 6.8.3: http://www.haskell.org/ghc/ :? for help
Loading package base ... linking ... done.
Prelude> :m + Control.Monad.Fix
Prelude Control.Monad.Fix> putStrLn $ fix $ \ m -> "This may surprise you, but I invented the \"" ++ m ++ "\" meme"
This may surprise you, but I invented the "This may surprise you, but I invented the "This may surprise you, but I invented the "This may surprise you, but I invented the "This may surprise you, but I invented the "This may surprise you, but I invented the "This may surprise you, but I invented the "This may surprise you, but I invented the "This may surprise you, but I invented the "This may surprise you, but I invented the "This may surprise you, but I invented the "This may surprise you, but I invented the "This may surprise you, but I invented the "This may surprise you, but I invented the "This may surprise you, but I invented the "This may surprise you, but I invented the "This may surprise you, but I invented the "This may surprise you, but I invented the "This may surprise you, but I invented the "This may surprise you, but I invented the "This may surprise you, but I invented the "This may surprise you, but I invenInterrupted.
Prelude Control.Monad.Fix>