Hyunjae said he was singing in the shower in their dorm recently (like he mentioned before that he usually does), and he said that Juyeon knocked on the door and asked him to be quieter;

Hyunjae said Juyeon asked really nicely - if it had been himself asking someone else in the shower, he said he would have just turned off the lights in the bathroom and ran away

Hyunjae: If it had been me (in Juyeon’s place), I would have just turned the bathroom lights off and ran! Juyeon said that very kindly~ If it had been me, I would’ve turned off the lights & ran away!