At the time of broadcast, the voice was still a mystery, until fellow 2PM member Taecyeon and 2AM member Seulong wrote on Junsu’s Cyworld mini-homepage.

Taecyeon wrote, “Your bo-bbi bo-bee aired. Hurry and go apologize to T-ara.” Seulong followed, “I heard it and then knew it was Junsu’s voice.”

Junsu answered calling Taecyeon a “loud mouth.” Later, Taecyeon wrote again, “Those in favor of ‘Jun Peep Jun Peep’ being Junsu’s nickname: 1.” Others soon followed.

Without knowing that his microphone was still on, Junsu playfully sang along to “Bo Peep Bo Peep.” Check out the broadcast!

Instead of being upset, T-ara later thanked Jun Peep Jun Peep for the small slip, because it helped their new song gain more popularity.