A SIMPLE Guide to billcipher References in other media gravityfalls shorts

>> YOUR LINK HERE: ___ http://youtube.com/watch?v=84DlLi69lgw

Gravity Falls fans seem a bit confused. • Inspired by CGP Grey's classic video: • History Lesson for the History Channel • • #gravityfalls • #billcipher • #10yearsofgravityfalls • DISCLAIMER! • The target audience of videos on the That GF FAN YouTube channel are, and always have been for ages 13 and over. This video may contain coarse language, mature themes and/or other subject matter intended for an older audience. Videos on this channel should not be viewed by anyone under 13 years of age.

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