During random dance play, HyunA showed off her sexy dance moves saying, "This is how it's usually done." The trio also danced to some of HyunA's hit tracks like "Bubble Pop," "Trouble Maker," and "RED". 

Seeing members Hui and E'Dawn perfect the choreography, HyunA was rather impressed, asking, "How do you guys know this?" 

She also took on the 2x as fast dance challenge, looking somewhat concerned. "I've never danced twice as fast before." However, as soon as the music cued, she danced like there was no tomorrow, smiling at the camera and even sang live. 

SEE ALSO: HyunA to be a mentor on 'The Unit'!

Watch Triple H's appearance on 'Weekly Idol' in the clips!