See? Murdoc is getting better at realising when things are jokes. In doing so, he's realised how funny Dirk is, and how nice it is to laugh and joke about things. Murdoc hasn't laughed as much with anyone before, it never felt right to like it does now.
Speaking of things that feel right... he's just going to groan in a low voice as Dirk reaches around to cup him. He presses closer, trying to find that mature, capable person that didn't need to have something resembling sex straight away- oh god.

"If that's what you want..." He trails off, nuzzling against his neck in a way that pretty much demands attention.