On another hilarious episode of MBC's 'Infinite Challenge' that aired on August 13th, the team members had to create an entertaining impromptu episode on the spot, due to the regular shoot being cancelled because of the heavy rains. While trying to find guests to star on the show, they were able to score a conversation with actress Lee Na Young. They wanted to use the phone's video calling feature (facetime) to make sure it was really her, but they couldn't because Yoo Jae Suk's old 2G cell phone didn't have that function. Eventually they decided to borrow one of the staff members' phones. The staff member states to the team that his password was '6', in order to unlock his phone and so Jung Hyung Don repeatedly pressed the '6' key on the smart phone. Of course, the phone didn't unlock because the members didn't realize they needed to connect the dots in an unlock pattern to draw a '6' figure. Yoo Jae Suk made the audience laugh, looking very lost trying to navigate his way through the smart phone as he remarked, "I've never used this kind of thing before!" Source & Image: Newsen via Nate