I once was playing doubles with a partner who was acting a fool and screwing up our plays and making us lose, yet would get upset with me if I made even the slightest error. On one serve, I hit him square in the back (on purpose). I never hit my partners with serves, so it was obvious that it wasn't an error on my part. He got his sh** together after that.
Does that make me an a**hole? Absolutely, but sometimes some people need their attitudes checked. And no worries, I get my fair share of chest busters ripped at me while at the net from opponents. I either volley them away or get out of the way. A few I've been hit with, but I never back off the net no matter what. F u if you think you're going to intimidate me. lol