He Could've Been Surfing the internet

Lego hobbyist spent 2 years building model of stadium | The Columbus Dispatch: "In near-exact detail, Paul Janssen created all the curves of Ohio Stadium using 1 million Legos - which, if you remember, are mostly rectangular.

The building is 'not square at all, so it was a big challenge,' he said. 'But it's so much more satisfying if you can accomplish something that's hard.'

Janssen recently finished his 8-foot-by-6-foot masterpiece, having spent 1,000 hours over nearly two years building it in his Dublin basement. No cutting, gluing or painting was involved in making the replica, the scale of which is about 1/100."

Hat tip to Art Scott.