Dave Mustaine, especially in his recent Tea-Party-loon phase, does not strike me as someone bursting with humor. So give the Megadeth frontman credit: Last night, he and his band were musical guests on Jimmy Kimmel Live, and they were also game enough to make a fake commercial for their fake Christmas album. Indie siren Jenny Lewis, who has the acting chops to enliven a sketch like this, has a nice moment doing “Baby, It’s Cold Outside” with Mustaine. Watch the sketch below.

A Very Megadeth Christmas is out never, on no record label.