(v) the act of getting booty called over Facebook. Generally done via Facebook chat around 2 in the morning. Used when the girl or guy either doesn't have the recipients phone number or is such a troll that no one would give him/her their number.
The recipient is usually already PTFO'd (generally from excessive drinking) and just forgot to log out of their facebook.
Dude 1: This girl totally booty booked me last night!
Dude 2: WTF is a booty book?
Dude 1: It's when a girl booty calls you over Facebook.
Dude 2: Did you respond?
Dude 1: Hell no, that girl was a troll