Top definition
1. The action taken in which one already receives a Facebook friend request seemingly before the sentence "Pleasure to meet you" is completed.
Bryce- "Dude I just met that cute chick Kelsey at the party the other day, next thing you know I get fastbooked! Came home that same night to a friend request."

Noah- "Mad fastbooking indeed my man, wasn't that party upstairs?!"

Bryce- "Exactly bro."
by ol221 January 22, 2012
Get the mug
Get a Fastbook mug for your sister Jovana.