Last night I went downstairs to turn off the lights and check the doors and windows, and as usual got caught up in my computer. After about five minutes my wife called down to me, and I came up. This is the conversation we had, more or less:

Wife: What were you doing? It sounded like you were on the computer.

Me: Yeah. I was looking at porn.

W: [incredulous look]

Me: You can go down and look, I left it up.

W: You were reading Eugene Volokh?

Me: No, I was checking out some hot graph-on-graph action.

W: Oh, you were reading xkcd.

We both laugh.

Actually I was reading this algorithm for finding strongly connected components in parallel.