Bumf

I encountered this new (to me) word in Agatha Christie's The Clocks (1963):

"It was just after two o'clock that I walked into the station and asked for Dick.  I found him at his desk leafing over a pile of stuff...

"You've got a lot of bumf there."

I had to look it up:

1. (Britain, obsolete) Toilet paper.
2. Useless papers; now especially official documents, standardized forms, sales and marketing print material etc.

 The word was created as a "shortened form of bumfodder."