The method in which a male strategically places a textbook, workbook, or notebook in front of the crotch or pelvic region to cover an embarrasing erection or boner. Mostly used in between classes while walking in the hallways.
Mike: Chemistry was so boring man, all i thought about was fuckin' bitches.
Joe: shit dude did u get a boner?
Mike: yea, i had to use the book method after class.