Olympic cyclists compare huge legs on Twitter

There are few competitions at the London 2012 Olympics have gained as much public interest as this battle of the thighs where cyclists Andre Greipel and Robert Forstermann compared their legs on Twitter.

The German cyclists posed for a photo which was posted to the social network showing their monster-like thighs bulging with muscles … and it quickly went viral.

In the tweet, Greg Henderson said: "You thought Greipel has a big set of legs. There was a quad off in the German camp today. Greipel lost."