To remove someone as a friend on Facebook.
I had no choice but to bookdrop her after she became a fan of over five hundred pages, got really into Farmville, and started updating her status in all caps ten times a day.
the act of ruthlessly knocking a highschool freshman's unnecesarily large stack of books to the ground and continuing to walk and laugh with you and your other ruthless friends.
me-dude i totally just bookdropped that kid
friend a-dude that was ruthless
friend b-dude walk faster i think that teacher saw u