DNA After hrs: Chetan Bhagat is taking his role of a judge on Nach Baliye 7 very seriously. Not content with questioning the genuiness of the participating couples' relationships, Chetan in the latest episode took his suspicion to another level " high or low is debatable. A source from the sets reveals that Karishma Tanna and Upen Patel performed on the song Jaane Do Na. "They had dipped themselves in a chocolate bowl as the theme demanded it. Post the performance, Chetan demanded to know if it was chocolate or body paint! He even went up on the stage and licked it off Karishma's finger to find out the truth. Karishma got so irritated, that she rushed for a shower immediately after the performance," adds the source. Her expressions says it all!! Ewww.