(Ethan and Nolan are playing the Nazi Zombie level at the End of Call of Duty : World at War, and this was the conversation they just had:)
Nolan: Guard the door, son, guard the door!
Ethan: Okay! (Sounds of gunshots, zombies growling)
Nolan: Guard the window!
Nolan (Groans from the exertion or WAR) Yes, son?
Ethan. If the zombies are dead, how do they know where we are?
Nolan. Because they can smell our brains!
Ethan: That is SO gross.
Because THAT's not going to give him nightmares. And I have to agree with Ethan. That is SO gross.
They're having a GREAT time.