Keep your hands, arms and feet inside the vehicle at all times, because Twice is about to take us on another TWICEcoaster ride.

UPDATE (2/19): Good news, Once! Twice's new album, TWICEcoaster: LANE 2, has officially disembarked—as has the video for the group's delightfully catchy, deliriously sweet electro-pop bop, "Knock Knock."

Watch the super infectious sleepover-themed clip, below:

UPDATE (2/17): Twice as nice! Watch the second teaser trailer for "Knock Knock."

UPDATE (2/16): There's someone at the door: watch the first teaser trailer for "Knock Knock."

UPDATE (2/11): Check out the track listing for TWICEcoaster: LANE 2, out on February 20.

The nine-member South Korean troupe is returning in February with a new "special album" called TWICEcoaster: LANE 2, according to a teaser announcement on the group's Twitter yesterday (Feb. 5). Pre-orders for the album begin on Monday, February 13.

A few days earlier, the group also teased something called "KNOCK KNOCK," due to be released on February 20, which fans now assume is the release date for TWICEcoaster : LANE 2.

Following the girl group's debut in 2015 with The Story Begins, Twice have quickly become one of K-pop's hottest new exports, hitting Top 10 with their "Like Ooh-Ahh," and notching the No. 1 spot with both "Cheer Up" and the insanely infectious "TT." Their last mini-album, Twicecoaster: Lane 1, was released in October of 2016.

Prepare accordingly for the Twice takeover, Once. (Yes, that's their fan club name. See what they did there?)

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