Secret Confessions of a Spineless Chicken

Sometimes I want to have horribly frank conversations with a few people I know.
In my mind, these conversations usually involve me demonstrating impatience.
I don't always say the things that are on my mind. And among the things I want to say out loud (more often than I care to admit) are:
"Omfg. I'm Not Like You."
"Seriously? I don't see it. But then, I'm not blinded by your privilege.";
"Stop talking. I mean, really stop talking." (I'd also settle for "Shut your big bazoo")
and "Omfg. Are you serious?" (I admit, I've used this one)

But, as The Gaul knows, what I usually end up saying is:
"Umhmm".