Karkat was very tempted to respond to that with an exasperated DUH, but again he was stopped by the condition of the other man. Damn injured adult making this difficult on him...

He could at least make a simple correction, so he pointed at Castiel and said quite plainly: "TROLL-napped. And quite frankly violated. This isn't my body and I'd kind of like the other one back. This is stupid." Stupid was an understatement, but he was at a loss for what else to say for once. How was he even supposed to handle this mess?

Getting a more detailed explanation from this human looked like an impossibility at the time, however.