The latest post from XKCD is an absolute mind-bender. If you have even a mild addiction to online comics/puzzles/timewasters than you may be saying goodbye to your entire day, and hello to being the most annoying mouse-clicker in the office. The stick-figure comic strip 'featuring humour about technology, science, mathematics and relationships' is the lovechild of Randall Munroe, a former NASA roboticist and a programmer, and has gained a cult following online for blending ridiculous nerdy humour with moments of existential beauty and genuine comedy.

This post, entitled 'Click and Drag' invites you to do just that. It's old-school internet fun but beware, the panel is apparently 1.3 terapixels in size, which is enough to fill 4212 iPads. There are loads of sweet moments and tiny jokes scattered throughout, (and apparently Wally from Where's Wally? even makes an appearance) but beware; it is slightly maddening. Especially the tunnels. Let us know your favorite bits, and if there's an end!