Butt facing 

When you butt dial someone on Face Time

Did you Face Time me yesterday?

Nah, just butt facing.

Butt facing by tranquilo April 23, 2013

Buttfacing 

The act of providing oral gratification to your female partner from stem to stern while she lays spread eagle on her stomach and youre laying between her legs, also on your stomach. MUST be a female reciepent as preforming this act on a male may result in an unfortunate teabagging incident. This term is self explanatory and is ideal for any man with an oral fixation who likes the sensation of warm butt cheecks blocking his vision, or any woman who wants both ends of her taint thoroughly primed.

Hey Baby, roll over onto your belly so I can get to buttfacing you from your happytrail to the small of your back

Buttfacing by kokonuts August 26, 2009