The boys of One Direction stopped by The Tonight Show Starring Jimmy Fallon last night to promote their NBC concert special, which aired that night as well. To start things off, Fallon brought up the time Kristen Wiig came on the show and portrayed Harry Styles, and then jokingly asked if the signed autographed looked legit.

He then asked them what their holiday plans were and how they celebrate in the UK.

"I think we'll all just be spending some time with family. Obviously we've been on the road for what seems like quite a long time now, so it will be nice to sit home with the family," Liam Payne told him. "I'm cooking [Christmas dinner] this year as well."

Fallon then asked them what the deal was with Christmas pudding over in England, but Louis Tomlinson said that it doesn't really taste all that great.

"They're all crap," Payne interjected.

Styles talked about how he though it was weird that in America, people put marshmallows on yams.

Tomlinson thought even the idea of this sort of dish was "bloody mad."

Fallon then asked Niall Horan to stand up and say what he was thankful for this year.

"I'm thankful for this moment and being here on this show," Horan said. "And for meeting Jimmy for the first time, and all you guys over here [points to the Roots]."

Styles then joked about the vinyl cover art for their latest album FOUR, saying that they way the group is posing in the image is how they always hang out in real life. Then they all moved to the floor to get more comfortable, and Fallon put on a Liverpool-esque accent.

Styles ended their segment by congratulating Fallon on his new baby — their newest fans.

Earlier in the day, One Direction teamed up with Fallon and the Roots to perform "Santa Claus Is Coming To Town" on classroom instruments while dressed in holiday-themed sweaters and costumes.

Watch the full episode below, which also features appearances from Jerry Seinfeld and Big Sean & E-40, and let us know what you think in the comments section!

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