The rooms in the Ikea catalog may be totally fake, but the rooms in Ikea stores are very real. So real, in fact, that you can actually sleep in them, say. And so real that a prankster managed to host a two-minute "house party" in the London store, complete with booze, music, and the company of his fellow patrons. After getting busted by security, he protests, "It's only once a year, it's only once a year." Watch the hoopla go down below.