When somebody has a completely different personality on social networking sites, like Facebook.
I was talking to Sally last night on Facebook, man, she is so two-faceb.

Harry is so much different when talking to him face-to-face. He's two-faceb if I ever saw one.
by Lexedy93 November 27, 2010
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When you are on Facebook and have to masturbate to a hot photo, you accidently click on the like button.
I was looking through Facebook photos last night, and sorry bro but I accidently facebate liked your Mom's bikini photo.
by bcgid March 20, 2016
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