(v.)- To wrap your buttcheeks around another person's face, like putting an open book over their face, hence the term "Facebooking." The facebooker can then proceed to smother his/her partner's face with his/her buttcheeks. Used as a sexual move between partners. Also known as "cheek to cheek."
Dude, she facebooked me last night and it was fucking awesome until she farted up my nose.
Oh gross! those two guys are facebooking each other in public in BROAD DAYLIGHT!