So it shows that things that would cause severe pain to him really doesn't amount to anything when it comes to the pain that he can feel from this girl.The alternate interpretation is that he commits all these supposedly painful acts just for her and to make her happy, but that she does not really care, explaining how she just looks at him for most of the video. But this does not explain why he feels no pain from these acts, soï»¿ I prefer the former.