Justin Timberlake and Andy Samberg have been palling around all week during rehearsals for the season finale of 'Saturday Night Live,' and now the two friends are starring in a series of hilarious 'SNL' promos for the occasion.

In the first of three spots, Samberg is so excited to see the 'Bad Teacher' star that he goes in for a smooch. Timberlake, who will be hosting 'SNL' for the fourth time, retracts as Samberg says, "Give the people what they want."

The second clip involves the duo's twin sisters, which they refer to as both "annoying" and "hot." The third and longest promo features JT and Samberg freaking out over a "ghost," which they narrowly escape. Or do they?

The funny men made a huge splash in 2006 with their music video short 'Christmas Special,' best known as 'D--- in a Box,' first aired on 'SNL.' The song won a Creative Arts Emmy for Outstanding Original Music and Lyrics.

In an interview with NPR, Timberlake said 'D--- in a Box' was written "in a delirium of no sleep on a Wednesday or Thursday of the week." He added, "We recorded it that night, and we were laughing so hysterically — and probably through the delirium of trying to write something so funny, this came out of it."

Timberlake teamed up with Samberg once again in 2009 for the follow-up song 'Motherlover.' Will a new song be unveiled on Saturday? We'll just have to wait and see.

Watch Justin Timberlake's 'SNL' Promos

Watch the Lonely Island 'D--- in a Box' Feat. Justin Timberlake Video