Paul Rudd is hosting 'SNL' this weekend (Dec. 7), with One Direction serving as the musical guest.

In the promos for his ep, the actor fangirls over 1D, along with cast member Vanessa Bayer, who screams into a pillow and can barely contain her excitement at the fact that the boys are performing on the show. Rudd soon follows suit.

Rudd, who stars in 'Anchorman 2,' also grabs a pillow when he realizes it's the One Direction. He does not pronounce Louis Tomlinson's name correctly, as any eagle-eared Directioner will notice. Or maybe he was just so overcome with excitement that he made the mistake. Who cares! 1D are appearing on 'SNL' this weekend and we're stoked.

Rudd's fangirl freakout is HILARIOUS!

Rudd has hosted two times before and he is clearly a pro. The pun promo at two minutes in is cute and clever.

It's 1D's second time appearing on 'SNL' and we're looking forward to it, so much so that we'll chomp on a pillow, scream, squeal and shout, Paul Rudd-style!