- In movies when the character attempts to fire their gun but has an empty clip, you can't help but mutter 'dumbarse' under your breath at them, for not counting rounds.
- Despite having never seen or even touched a real gun you can't help but correct friends and family on any inaccurate miming of weapon use.
- In spy type movies it takes all your will power to not criticise characters if they do something you consider amateurish.
- You no longer walk sideways - you strafe.
- You no longer head someone off - you flank them.
- You look left, right and up when entering a room.
- You think in an emergency you could probably navigate your way in or out of the building you work in, via the air conditioning vents.
- You can't help but see the resemblance between a whole uncooked chicken and a headcrab.
- Little girls singing nursery rhymes is closer to bone chilling than cute on the nice/horror continuum.
- When you sit at your keyboard your fingers naturally sit on WSAD and the Shift key, not JKL and FDS.
- Entering a toilet where there is a flickering fluorescent light gives you the uber wiggins and you'll need to push the door of any empty stalls completely open before you can do anything.
- Head shot or head home - you know it's the only way to be sure.
- You can't shake the feeling that turning the likes of these will result in great and favourable things for you: