Major Lorne (and Rodney maybe) get thrown through the Gate and have to find a way home to Atlantis. Heavy Lorne (and Rodney if you put him in), with a lot of Young too. Not phased if it's slash or not.
The entire base is exposed to an ancient device that turns everybody homosexual. It didn't effect John and Rodney who are already homosexual together, or Carson who is also gay. When they fix it, Lorne goes to Beckett saying that the anti-gay-ray didnt work on him and he's still gay. Carson proves to him that he's gay for real.