The 'belly button challenge' must be the most bizarre challenge that is currently trending over internet and making people go crazy.
This latest trend involves touching your belly button by reaching behind your back and around your waist and with this it tests the challenger's skinniness, arm length, or arm flexibility, the Mirror has reported.
This new internet craze originated in China where thousands of people uploaded their selfies with their hand wrapped around their waist and with a hashtag translating that 'reach your belly button from behind to show you have a good figure' and received 130 million hits in a day.