In the Tarzan movie we witness him trying to assimilate into the culture he’s been taken in by. His parents were killed when he was a baby, and the apes took him in. He grows thinking he is an ape that looks different from others. There is no questioning the fact that the apes have treated him with love and have not once treated them differently.However, he struggles with the Alpha Ape because he does not accept him, and in the clip above we see him observing himself and upset because he looks so different and that is why he isn’t being accepted by Kerchak ( Alpha ape). So when the mud jumps on his face he notices that he is brown and that is the color of the apes. So he tries to cover himself in the mud to look more like them. He was displaces in that culture because of the excessive differences between him and others. Throughout the movie he tries to fit in and show Kerchak that he is worth his recognition and acceptance.
So at some point in the movie, Tarzan finds out that he isn’t an ape and is actually human. So Jane the woman who introduces him into the human culture, is the one that shows him how a human male is supposed to act like. And then he tries to fit in into that culture. In the clip above we see him trying to act like a human, and assimilating into that culture.