Of all the moments fans are eagerly awaiting to see after "The Twilight Saga: Breaking Dawn - Part 1" hits theaters on November 18 — the wedding and infamous birth scene included — few can measure up to the hype surrounding Edward and Bella's first sex scene.

When MTV News' Josh Horowitz sat down with Kristen Stewart, Robert Pattinson and Taylor Lautner for "MTV First" and asked the cast questions submitted via Twitter, it was no surprise that the fans wanted to know more. One of the first questions asked was: "Rob and Kristen, was it extremely awkward filming the love scene in the movie? Were you guys laughing a lot throughout?"

Both Stewart and Pattinson turned quiet after hearing the question, and the answer was unanimous and definitely a joke. "Super serious," Pattinson said.

"Yeah, me too," Stewart agreed. The mood was certainly lighthearted and jokey, but Stewart ended up giving the question a serious answer. "Not to give anything away ... You've been working for so long, and it's also not real," Stewart said. "It's not just human sex. It's ... obviously blown a little bit out of proportion, slightly. It's kind of like the most important scene in the movie. It's so weird."

Pattinson agreed and shared his own, let's say, intimate experiences filming the love scene. "I just ended up thinking purely about vanity things," Pattinson said. "You're sitting there in a little g-string. ... They give me a big g-string, but it was too small for me. It was like old ham."

Not to be left out, Lautner shared his relief to have missed out on a g-stringing in "Breaking Dawn," but reminded everyone that he had his "fair share of g-strings in 'Eclipse.' "

Stick with MTV News for much more from our exclusive Q&A with Kristen Stewart, Robert Pattinson and Taylor Lautner!

Check out everything we've got on "The Twilight Saga: Breaking Dawn - Part 1."

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