They may all be dressed in waterproofs - but theyre plainly happy. This crowd of up to 768 people grouped together to dress in black and yellow to create the biggest human smiley in the world on Zagrebs main square. Their efforts were said to have broken the Guinness World Record, smashing the previous record, which involved 551 participants and was reached in the Latvian capital of Riga. The Croatian city has also been the setting for another unusual record - the most socks worn on one foot. The number of 150 achieved by Krunoslav Budiselic (Croatia) at City Centar One in Zagreb, Croatia, on 13 November 2010. Budiselic needed 45 minutes to apply the 150 socks on his right foot. MO