For analog - it's a cookbook...

Hmm, a few options. Act really nervous and when he asks you what it is say "uh, nothing, really, nothing at all, just sign it and give it back please, no need to read it..."

Or pull the ink cartridge from a pen and give him that and the first page. Then try to convince him that it's electronic paper and the pen is the 'stylus'. Bonus points if you can actually convince him, then when he tries the 'stylus' on the paper look really up set and say "aw, shit you broke it! R&D's gonna have my ass on a platter!" Even better if your company doesn't actually have an R&D department.

Or just tell him what it actually is and then laugh maniacally. Maniacal laughter adds surrealism points to everything.

More..

Tell him it's your latest piece of performance art. Then strike a dramatic and/or goofy pose.

Or tell him it came out of the combination phone/printer in your office. Then tell him that someone called for him too and wanted you to pass on SKRREEE-OOOOWOWOWOWOWWWOOO.

It's ink and white space.

A missive from the overlords - all hail the overlords!

Highly classified. Then refuse to let him look at it, insisting that he doesn't have enough clearance.

The work of an infinite number of monkeys. Then tell him that Macbeth is printing now and should be done by next Tuesday.

Your manuscript and you want him to produce it. Proceed to explain in depth about how it's a gripping and dramatic tale about <content of fax>

Before answering, tape it to the window face out. Then tell him that it's a note to the window cleaners.

It's his latest psych evaluation. Tell him you took the liberty of writing the test for him and that the orderlies should be arriving any minute now.