Nerd humor about Katamari Damacy

Today on xkcd, a way-funny comic for trufans of the amazing video-game Katamari Damacy. In KD, you roll a giant ball around a landscape, trying to kock over and pick up the objects that litter it -- as you pick up more objects, you get bigger, which increases the objects you can grab, all the way up to mountains, clouds and worlds. KD hacks your brain the way that Tetris does -- after a lot of Tetris, the whole world seems to be composed of polygons that want to be slid together, and after a lot of KD, the world seems made of objects that you should knock down and roll up.