I want to get rid of my friend
Is there a reason you want to get rid of your friend?
Because he is always trying to put me down.
I'm sorry that your friend treats you like that.  It's okay to get a rid of a friend that does not treat you with respect, most friends have boundaries and try not to hurt each other.
I decided to get rid of him forever by raping his ass and making sure it wont be pretty anymore.
Whoa, whoa; you shouldn't talk about raping him even as a joke. That is not okay! Just cut him out of your friends group and leave it at that.