Oookay.. That last parts needs a bit more clarification. Having stopped (no pun intended) dead in his tracks at Aradia's comment, hurried to catch up with her.

"uh Lusii are Lusus right? Karkat's talked about that before but uh." What is a delicate way to put this. "Do you guys.. all hear.. dead people?" He was gonna ask if she could see dead people too, but Sixth Sense really ruined that line for anybody.