It'll feel like your eyes are playing tricks on you when they're trained on someone whose opinions you value highly. This person is saying things you never thought you'd hear come out of their mouth! It looks like they're turning into someone you don't recognize. This person is trying to be someone they aren't, and they're acting like that in order to try to impress someone else. Be the voice of reason in their life and tell them to be true to who they are.