Dailies | ‘SNL’ Promos: Jimmy Fallon Does His Best Justin Timberlake Impression, Worst Singing (Video)

'SNL' Promos: Jimmy Fallon Does His Best Justin Timberlake Impression, Worst Singing (Video)

You sir, are no JT

Jimmy Fallon and Kenan Thompson did their best Justin Timberlake impersonations while getting pelted with snowballs on a New York City rooftop during a winter storm, all in the name of promoting this week's “Saturday Night Live.”

This time around, the “SNL” promos were lengthier than usual, clocking in at three-minutes, 17-seconds — but hey, it's Christmas.

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Inside, where it's warm, the bad singing continued — if not escalated. Cast member Kate McKinnon replaced Thompson on the Studio 8H balcony for some strange folksy tunes about the upcoming show and some even stranger slow spins.

Fallon comes home to host the Dec. 21 episode with his apparent BFF, Timberlake, as musical guest.

Watch the clip: