Top definition
To jerk off or masturbate to photos on Facebook.
kid 1: Hey dude, wanna hang out later?

kid 2 (Extremely sexually agitated): Naw man, I'ma go fapbooking.
by phelgmcannon February 18, 2010
Happy St. Patties Day!
The act of checking your Facebook in between porn videos.
Hold on, let me wash my hands. I didn't expect you to message me while I was fapbooking.

Jack was lucky when his mom walked in on him in between videos fapbooking.
by General Lee Derping May 09, 2011
Happy St. Patties Day!