Dave was playing his zombie game
Dave: Argh these guys move fast. How many times do I have to shoot em?
Me: Go for the head shot.
Dave: I keep running out of amo. How 'bout...argh I'm dead again. Okay try this again. Hey head shot you were right.
Me: You always have to shoot Zombies in the head. Doesn't everyone know that?
Aaaaaaaaand I'm just going to publish this because I'm proud of my geek knowledge.