Theft of the Magi
Permanent link to this comic: http://xkcd.com/506/
Image URL (for hotlinking/embedding): http://imgs.xkcd.com/comics/theft_of_the_magi.png
[[Black Hat Guy is holding up a video game. Woman is holding up a harness.]]
Black Hat Guy: Hey. I sold your Roomba on Craigslist so I could buy myself Left 4 Dead.
Woman: But I eBayed your XBox so I could get this dueling harness for my Roomba!
Black Hat Guy: Aww.
Woman: Aww.
{{alt text: Every Roomba needs a dueling harness..}}