"The bathroom. I’m always in the bathroom when I think of ideas and melody. Then I record it in the bathroom on my phone as a voice memo.”
Well that's pretty fucked up for someone who's the only decent-ish singer in a group of talentless wannabes who seem to think ripping their shirts in public is counted as a talent itself (yes, I'm looking at you, Taecyeon, you arrogant motherfucker). Bathrooms are for pissing and shitting. There's a bloody good reason why toilets were invented.
This guy probably spent a good deal of his time in the bathroom at school whenever he got thrashed by someone. Probably writes erotic fics and ideas how he'll make his pleasure time with the other members even more memorable (and quite possibly other fags in JYP such as JYP himself, Jo Kwon and the list goes on since inbreeding in that piece of shit company is not unknown), while thinking of erotic melodies to accompany it and fapping at the same time.
Or alternatively, he probably has the tiniest dick out of all 2PM members (not that their own dicks are likely that big to begin with in comparison) and is afraid of being bullied of it, hence avoiding the fap circle the group has every now and then. Rumor has it that Jay Park had the shortest one before he got the boot but since then, Junsu replaced him.