Well, that had certainly gotten a reaction. The obviously nervous man practically jumped out of his skin before he yelped and ran away. As he disappeared into the room, Reno couldn't help bursting out laughing. It had been a good long while since he'd scared the shit out of someone. He'd kind of forgotten how utterly hysterical it could be.
He had almost managed to stop chuckling when the door opened again and Luigi came crashing back into the hallway. That got an amused snort. At the question, he shrugged.
"Couldn't resist. You were so-- heh-- you should have seen--" and with that, he started laughing again. It didn't even quite cross his mind that this probably wasn't the best first impression to make on a new teammate. Not that he would really care if it had.