(n.) An imagined book about hitchiking. The first rule is to carry out the incentive to give head.
Here's a line, and on this side of it we ain't gay.
by Gumba Gumba May 30, 2004
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A book of rules that has not yet been written, but is put into context by what is understood to be RULE! Ones intuition, gut feeling or standards. Simply put; morals.
Dude you never get your head where you make your bread. Rule 345 in the unwritten book of the road...

She should have never slept with her best friends man, it's in the unwritten books of the road.
by kelleybelly November 23, 2007
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