(n) derived from the word sketchy. this is a word that describes someone who shows sketchiness to a ridiculous extent.

1. the opposite of textbook, in terms of appearance or maneuvers; sloppy, sketchy, antitextbook

written documentation of the proceedings of a party. (The party's "minutes", so to speak) Mainly includes profound words of wisdom spoken under the influence of whatever legal or illegal substances are present, such as "Where'd all these robes come from?" (Natasha, 3:25 a.m., 3/22/03)
As the night progresses and people become "sketchier", the term becomes increasingly relevant to the contents of the book.
Upon reviewing the book at a later time, if you are able to decipher your own scribbling, it can provide fabulous material for ridiculing the other partygoers for their wacky antics and genius-like wisdom.

The notebook Moriah Elizabeth uses to roughly barking sound effect here draw out her sketches before drawing them in her actual sketchbook.

During a night of drinking, the first friend to pass out then becomes a 'sketchbook' for all those in possession of a sharpie. This friend is subsequently photographed and posted to Facebook, thus becoming a Sketchbook Friend.

A book containing blank pages, generally carried by an artist or someone trying really hard to be aesthetic.