Check this out!
J.Y. Park appeared again on 'Weekly Idol' on April 27, and there, he met up with his former trainee, Hani of EXID, and the two put on a show together! She showed him the dance to the famous "Up & Down," and he partook in the performance with her - pelvic thrust and all - to the amusement of Heechul and Defconn.
Check out his moves above!