When Yosuke mentions a nap, his body buzzes pleasantly at the thought. Yeah, nap sounds awesome. Too bad he's also too lazy to move away from Yosuke. Can't he nap like this instead? Probably not, they are both dirty and they don't want to mess up the living room.

He pulls away very reluctantly from Yosuke's neck and pecks his lips briefly:"Mm.. same. But we need to change clothes first." Why does he feel so giddy about changing clothes- he has no idea. Probably because of the reason why they need to do it. Yes, that's probably it.