a person who is a backstabber, a person who talks about people behind ther back and then turns right around and is there friend, etc.
Sarah: Janae was talking about you just a second ago.
Lisa: But I thought she was my friend.
Sarah: Yea, she is really 2-Faced.
A person who is phony or fake towards her/his fellow peers.
Yeah lil d is a stupid ass dick suckin ass 2-faced pussy ass bitch