Phoebe turns out to be married to Duncan, a gay friend who needed a green card. Phoebe did love him, and finds those feelings returning. Now (six years later) he's back and needs a divorce. Turns out he's not gay, and is getting married to someone else. The revelation of Phoebe's secret marriage prompts several other discoveries: The underwear on the telephone pole outside is Monica's, from when she had sex with Fun Bobby on the terrace; Chandler has a third nipple; Joey was in a porn movie (which they then watch). Ross is nervous about the prospect of having sex for the first time with Julie. He approaches Rachel for advice; her own interest in Ross keeps her from being completely honest, and she tries her best to see that it doesn't happen.
Phoebe: Um, I'm gonna go meet Duncan. He's skating tonight at the Garden. He's in the Capades.
Joey: The Ice Capades?
Chandler: No, no, the Gravel Capades. Yeah, the turns aren't as fast, but when Snoopy falls... funny!
Julie: So is there, like, a story, or do they just start doing it right... oh, never mind.
Chandler: Okay, now wait a minute. That is the craziest typing test I've ever seen.
Monica: All I say is she better get the job.
Ross: Looks to me like he's the one getting the job.
Phoebe: I... I don't... I don't understand. How can you be straight? I mean, you're... you're so smart, and funny, and you throw such great Academy Award parties.
Duncan: Well, I've never told you this, but there were one or two times back in college
when I'd get really drunk, go to a straight bar, and wake up with a woman next to me. But
I... I... I told myself it was the liquor and everyone experiments in college.
Duncan: But now I know I don't have a choice about this, I was born this way.
Phoebe: I... I don't know what to say. I mean, you know, you're married to someone for six years, and you think you know him, and then one day says, "Oh, I'm not gay."