the song is not bad. it is controversial because it got banned in KBS before it was even released for risk of imitation. fans were confused, but when the MV came out they knew the reason, they put the hair dryer in the tub which is very dangerous and it got banned because children might imitate it. The other thing is that fans didn't like the lack of creativity in their stage outfits and criticized the stylists. they also said that some of the members' outfits were too revealing, in the album trailer Yunjin and Cheawon walk in the streets in only underwear. Plus the choreography of the beside track of the EASY album SMART was disliked, because of the inappropriate dance moves, cuz Eunchae is still a minor.