You Know You're a Stargate Fan When...

[AlexanderD]

When you start referring to your motorcycle as the Daedalus...

[timstro59]

when you design ships for the sgc.

[thundersal]

You memorize the Earth address for Milky Way, Atlantis, and Universe.

You memorize other SG-1 and Atlantis gate addresses.

You print out the DHD symbols and tape them to the wall and pretend you are dialing the gate while pushing on the symbols.

You stand in the middle of your living room and pretend you are about to be beamed or ringed up.

Everytime you are about to merge onto the highway you say "opening a hyperspace window" or "engaging hyperdrive". And when you exit the highway you exclaim "exiting hyperspace".

You think the Hazard light button in your car is the point of origin.

You create a printout of the DHD and put it in your car pretending it to be a jumper.

You speak like teal'c

You say "John Shepherd" just like Todd does.

You make all the sound effects with your mouth of the incoming wormhole, rings, and asgard beam.

You pretend the umbrella is a staff weapon by holding it horizontal and pressing the open button, and you make the staff weapon sound effect as if its firing.

You create a stargate out of cardboard.

You draw or tape the ring platform on the floor.

[timstro59]

When you've revived this thread.

[Lunaeclipse]

... you've lost count of how many times you've watched it so you just say that you've watched it 'a lot'...

[Scofield]

You feel ashamed you've watched it just for 7 times and not more.

[Vetinari]

...when you've got background TV on, and well:

The IT Crowd:
Reynhom: "Congratulations on Project Icarus Roy!"

My immediate thought? OMG! Roy must have been the IT guy on Project Icarus!
"The Stargate is exploding the planet!"
"Well, have you tried turning it on and off again?"

[Lunaeclipse]

...When you are watching other shows and you're thinking 'this show could use a Stargate'

[Lunaeclipse]

...When watching other shows some of Jack's funny observations pop into your head (where appropriate)...

[timstro59]

When you go back and look at a bunch of old comments and think, that makes sense in context.

(but now it's just, "What was I thinking?")

[hedwig]

You're watching a scientific-type show and you find yourself thinking "Sam Carter would be entranced by this", and Jack O'Neill would understand none of it.

Here's a recent headline I came across. They need to consult Sam Carter as to how best to accomplish this protection from asteroids, etc.:

Global Effort Needed to Defend Earth from Asteroids, Astronauts Tell UN

[StevenSG1]

When you can play out most episodes and moments in your head. And you start to say a lot more.

[hedwig]

When you can play out most episodes and moments in your head. And you start to say a lot more.

I can do that!

[StevenSG1]

I can do that!

That's one of the best things!

[Lunaeclipse]

You are having a conversation with someone and they say something innocent and unrelated to Stargate, but it reminds you of Stargate and then you smile, making them not sure if you were smiling at what they said or not, which can be uncomfortable if they were actually being serious...