But as long as I have something to occupy my mind, I can't say that I'm b'd. Instead, I think of other things, make up stories in my head, write grocery lists. In class, I might take extensive notes on tangents. It's true that most people don't consider it a major defeat to sink into b'dom, but it may be that we don't have our definitions straight. I find this word to be terribly vague.
People use it to describe a wide range of negativity.
They use it to say that they're physically tired, or frustrated, or angry, or just to say there's something else they'd rather be doing. When people tell me they're b'd, if I ask them what they mean, most people can immediately come up with a more articulate synonym. Not everyone means that they've completely shut down, that they're tired of being in their own head, that they don't have the will to change the channel. In movie commentary, as in life, no one wants to hear you whine. They want enthusiasm, scathing criticism, controversy, not apathetic passivity.