Mad Men
Peggy Olson (Elisabeth Moss) walks into the McCann offices in episode 12 of "Mad Men" Season 7. AMC

When Peggy Olson (Elisabeth Moss) slow motion strutted down the hallways of McCann-Erickson in episode 12 of the final season of “Mad Men,” the Internet exploded. The image (pictured above) immediately became a fan favorite moment and a wildly popular meme. However, on “Late Night With Seth Meyers” Thursday, Moss confessed that the scene was not nearly as fun to film as it was to watch.

She told host Meyers that the now-famous shot was a struggle to get.

"It was not cool at all," admitted Moss. "I was holding this box, which everything on ‘Mad Men’ is super real, so they made the box really heavy. The painting [Peggy holds in the scene] is kind of awkward and kind of large, and they wanted me to hold it so that you could see it in certain shots. And then the cigarette — it's actually really difficult to do. James Dean makes it look super cool and easy, but it's actually really hard to hold a cigarette in your mouth and walk. I was just trying to look cool, trying not to drop a painting, and trying to bump into the walls."

Moss also had some positive memories to share about her time on "Mad Men." Moss told Meyers that she was happy to get the most romantic ending of any character on the show, referencing her character’s big kiss with Jay R. Ferguson’s Stan Rizzo.

Watch Elisabeth Moss talk “Mad Men” on “Late Night With Seth Meyers” below:

Moss may have not felt so hot filming the “Mad Men” scene, but the actress is certainly on a hot streak. She is nominated for best actress in a play in Sunday’s Tony Awards for her role in “The Heidi Chronicles.”

Moss will appear in two upcoming films, “Truth” and “High-Rise,” later this year.