I'm going to poke fun at someone's performance
Why would you poke fun at someone's performance?
I think it's hilarious to make fun of the guy.
While making jokes can be amusing, they shouldn't come at someone else's expense as it can be very hurtful to them. Instead of making fun of that person's performance, try to come up with other subjects to joke about.
I don't care about what you are saying. I think that it is okay to be mean to some people when they are incompetent in their performance.
If you had difficulty with your performance would you want to be ridiculed or supported? Think about how your making this guy the butt of your humor will make him feel.