When it comes to expressing opinions nowadays, Twitter's probably your best bet at reaching the masses, not that anyone will care. Who do you think should play Batman? Or what are your thoughts about a topless Geraldo selfie?  Here's a neat trick to making your opinion sound like it's so obvious it doesn't even need any explanation -- just tack the phrase "just saying" on the end of it.

Sincerely. It immediately wipes out any possibility of arguing with these people. They don't want to talk about it, they're just saying. Why are you taking their lighthearted (albeit mildly offensive comment) so seriously? When that isn't the function of a "just saying," it is generally used to add a dimension of "depth" or at the very least "humor" to a particularly asinine observation. It is extremely annoying. Here's proof. Please stop.