I'm going to play a video really loud in a quiet space so the other person would leave
What is wrong with them?
I hate the same music as he does, at first I wanted to have a new friend, but turns out I don't want any. He's annoying.
That is very rude to play loud videos in public like that. You should talk to him. Don't be passive aggressive.
I want to piss him off even more so that he leaves.
It can be really hurtful to try to annoy people to drive them away. It would be better to be honest to tell them how you feel.