Those Transatlantics are from Michigan and, like so many other Michigan bands, they've contributed to Suburban Sprawl's Christmas releases. (That link there has six years' worth of music, for hours and hours of original and covered Christmas songs. Highly, highly recommended. This is not the only song I'll be posting this month I found on that page.)
This song starts out charming and adorable, continues straight down that avenue for a while, then takes a left turn down the boulevard of rocking your ass so hard it falls off your body. It's earned a place in my 2008 Christmas mix "Have Yourself A Magical Little Christmas," which I'll be posting in the last week before Christmas.