If you speak ironically, and then refuse to clarify whether a statement is sarcastic or genuine, your communication is not accessible.
If you are unwilling to explain a concept when someone takes longer to understand it than you might, your communication is not accessible.
If you are asked to slow down, to repeat yourself, to define a term that is not understood, or to stop joking and speak seriously, and you meet this request with contempt, your communication is not accessible.
If you deliberately mislead anyone for the purpose of amusing yourself or others with their gullability, your communication is not accessible (and you are also an asshole).
I'm tired of people who fill every conversation with impassible cognitive barriers.
I'm tired of having to use all of my brainpower just to figure out whether I am being manipulated or told the truth.
I'm tired of the idea that believing another person is a character flaw, an invitation to victimize, a sign of an embarrassingly unsubtle mind.
I'm tired of the assumption that because we're all at college, we can all speak on this distorted and sophisticated plane of half-truths and true lies, and surely we will all understand each other because anyone too dumb to navigate this level of language would never have got here in the first place.