To hit the books off someones hand-in the college hallways causing all of their papers, publications, and folders to fly on the floor. This usually makes them embarassed in addition to belated for class. It's applied to Freshman by upperclassmen. It's a good idea used with a decleration of "Welcome to senior school, freshman!" though "Welcome to freshman, twelfth grade!" can also be similarly used. 1) In school hallways, some one pushes your books towards floor, phoning a "BOOK CHECK"2) once you drop a novel.