Col. O'Neill
Look, I know I should know this by now. I swear it'll be the last time I ask. These wormholes we go through, they're not always there, right?
Capt. Carter
No, sir. They can only form between two open gates.
Col. O'Neill
What's with the worm part? The worm thing. I-I don't get that.
Capt. Carter
That's just a metaphor.
Col. O'Neill
Right. I knew that.
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