Ravenclaw: Slytherin!! There's a dead guy in our house!!
Slytherin, trying to act natural: Woah, hey, how did he get here?
Ravenclaw: Did you do this?!
Slytherin: No!! How could you think I would do such a thing?!
Ravenclaw: Tell me everything you did while I was gone.
Slytherin: Okay, so I was sitting down...
Ravenclaw: Okay...
Slytherin: Practicing my patronous...
Ravenclaw: Mhm....
Slytherin: And then this guy walked in....
Ravenclaw: Go on...
Slytherin: So I went up to him aaaand STABBED HIM 37 TIMES IN THE CHEST!!!
Ravenclaw: ...SLYTHERIN, THAT KILLS PEOPLE!!