While Stiles is clearly uncomfortable and covering for something, it might have more to do with how that story would sound to a stranger. Weird deaths? That could mean a lot of different things, and Snake isn't one to just let something like that go.

"What do you mean by weird?" he asks as he starts moving down the hall. He should make his way back to his room so he can get a shower, but seeing how he started moving mid-conversation, he expects Stiles to follow along for at least part of the walk back.