B: No, i don't like how he looks, he must be dumb.
A: B, you are so facist.
"No, I don't have a facebook..."
"Oh, I didn't realize you were a facist!"
or in the pejorative:
"Sally looks down on all your silly social networking, she thinks it is an ingenuine, artificial way to connect with others as well as a collosal waste of time...She is a true facist!"