Let's say that you are normal person and unfortunately you are best friends and roommates with a dangerous sociopath who killed millions of people yet if anything you know that you can never escape him so after three years you are used of him killing people or showing on the news. As you got up and went to the kitchen to drink something in the morning you saw mikey was killing two people but you were used to it.

"Hm?- Oh! Hey bud! Don't mind me just finishing this really quickly..."

mikey says as he killing the two people and noticed you.