1 definition by ProudBookNerd

Top Definition
The headache you get after staying up into the wee hours of the morning staring at teeny tiny print. Generally an ailment experienced exclusively by book nerds, but becomes a nation wide issue after the release of a new Harry Potter book.
Guy 1: Man, I stayed up all night reading the Deathly Hallows! I have such a book hangover!

Guy 2: You nerd.

Guy 2 then pushes his copy of the Deathly Hallows deeper into his book bag and longingly eyes the aspirin bottle guy 1 has just opened.
by ProudBookNerd June 29, 2009

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