This very short story took me 3 minutes to read and 3 days later I'm still thinking about it

"He finds himself sitting in the neighborhood bar drinking a beer at about the same time that he began to think about going there for one. In fact, he has finished it. Perhaps he’ll have a second one, he thinks, as he downs it and asks for a third."

I'm also pretty embarrassed not to have heard of Robert Coover. You can and should read the whole thing (it is shoooooort) here.