Bars are great. So are brightly coloured plastic balls. What happens when you put the two together? You get an alcoholic, adults-only ballpit paradise, that's what. One of these debuted in San Francisco a few weeks ago, much to the delight of grown-ups-in-denial across the city. The pop-up cocktail bar allowed punters to sip on booze in a giant ball pit and get smashed while reliving the glory days of children's playtime. The two-day event was a long time coming, because, according to the organiser Forward Motion, 'The biggest obstacle was trying to raise enough money to purchase 40,000 ballpit balls' (no sniggering). At any rate, as the event was such a success, there are now plans to bring it to other locations. It's only logical that it should head here next, 'cos Londoners are the ultimate ballers, right?