You know someone you know isn't a gatehead when...

[Supreme Commander Sil]

When you're working at McDonald's and to say somebody's lost it you say "three fries short of a happy meal " and they stare at you stoically

[Stargate Atlantis Girl]

When you here something that reminds you of Stargate and make a joke about it, but everyone just stares at you.

[Cold Fuzz]

...you start talking about something Stargate related and then someone rolls their eyes and mutters under their breath, "Here we go again."

[SGAFirenity]

when you show your friend a picture of a stargate and they say "It looks like a hot tub". (Yes this has happened to me)

[Gate Rider]

When you show your friend (who does watch Stargate now and again) an interview with Amanda Tapping and his first response is "Is she high?".

Wow...

[Eragon]

when you call someone a shol'va and they don't get the reference

[Primus Commander Woden]

when your friends don't believe the stargate exists.....such fools!

[syfygyrl]

.....When they think "gate" refers to the swingy-thingy that lets them into your white picket-fenced yard.....

[Primus Commander Woden]

When they don't know why you want to name all your pets after ancient gods...

[syfygyrl]

...When they don't understand why you freak out when they say "Imma love goooooold"(Pronounced: G-oo-ld. Like Goaul'd.)...

[Primus Commander Woden]

when they fail to see the potential of a toaster......

[syfygyrl]

...Or a microwave. .......

[WraithTech]

... he or she sees a photo of a group of Wraith and asks what metal band the photo is.

[Rickington]

... they immediately associate an iris with an eye or a camera.

[syfygyrl]

..........The person thinks you are referring to a "Ringwraith" when you mention the Wraith & ask if Frodo is your fave LOTR character........