Explain xkcd: It's 'cause you're dumb.
It seems to me that the off-panel character is most likely Cueball. The way he says 'Haha. I'm so absentminded' makes me think that the obelisk is intentional, and hes trying to dismiss it lightly having been found out. --Pudder (talk) 09:43, 10 September 2014 (UTC)
