The title the ancient Egyptians used for what we now call the Book of the Dead was The Book of Going Forth By Day. Note that in the UK until a few years ago the pubs opened at 11 a.m.
If you try really hard (one of my correspondents did) you can see this as a very elaborate joke via the chain: Around Elevenish —> Late in the morning —> Late —> Dead —> Book of the Dead. But I doubt if even Terry is that twisted.