Humor at the coach's expense is seldom amusing. Humor at the official's expense can work for some officials. If you're not able to pull it off routinely in your life off the court, I would not recommend it during the heat of battle. Also generally ill-advised with a new coach or for younger officials.
And: most of you mean to use 'facetious' and not 'sarcastic', unless you're out to hurt people's feelings with your irony.
