New meaning coined by Jason Hatcher in early 2007. It is a short form for the activity of sending messages to friends through the popular online social utility "Facebook".
See also: F-Booking, Effin, Effing, Fooking, F'in, Fook, Fooking
I've had so many friends added to my profile lately that I'm F-ing on this thing all day and all night.
this wody doesnt like to say the word FUCK, so she uses F, or F-ing
holy f-ing shit billy, that's hilarious