the manner of one person fucking another persons mouth.. usaully, it's the man who sticks his penis into either another man or woman's mouth.. but sometimes it's a woman who slaps a strap-on onto herslef and sticks it into someone's mouth.. (see strap-on)
1) Driving one's penis deep into a mouth.
2) Kissing so hard and intensely that it can no longer be called "kissing" and needs this term to best describe the act. An act which is amazing done, and disgusting to watch.
1) "Her pussy was so dry and covered with weird pussy bumps so I face fucked her instead. Good thing I'm on penicillin."
2) "We went to Denny's after the bar and this guy was face fucking his boyfriend in the corner booth. I was so appalled that instead of rushing to the can to puke I hurled on the two of them."
She got mad at me cause she walked in on me face fucking herbest friend so she went to go fuck Dominic so Dominic didn’t know she was my girl but now she wants to fuck with Dominic