I think you described me in college when I played in my friend's Dark Sun campaign. Of course, I was playing a Thri-kreen, so the subtleties of role-playing were completely lost on my character since the GM felt it was appropriate that I only communicate with clicks and whistles. It made sense I suppose, but it also meant that any time dialogue came up, I spaced out.
We were playing all the published modules for Dark Sun, and he tended to run them for the sole enjoyment of his girlfriend anyway. So, in the last touching scene of some story-oriented module, I asked a question about who this person was, and it was apparently someone very important whom we'd been dealing with for a great deal of time, and just risked our lives saving, etc, etc. I didn't care. His games were BORING, and I was a freaking Thri-Kreen. And like I said, he pretty GM'd the entire game staring at his girlfriend, so I was just a wallflower to him during those games anyway.
But, it does beg the question, are your games boring? Or is Frank mentally retarded?