Overhearing his parents Stephanie and David Carver having a heated argument, young Justin Carver (
Cole Sprouse) retreats to his bedroom. A few minutes later, Justin peeks downstairs, only to see his mother Stephanie (
Connie Sellecca) locked in a warm, romantic embrace with none other than Santa Claus. Unaware that mom's hirsute "lover" is actually his own father, David (
Corbin Bernsen), who has dressed up as Santa in hopes of getting back in Stephanie's good graces, Justin is convinced that his parents' marriage is on the rocks -- just like the recently shattered union of his best friend's parents. Further convinced that jolly old Saint Nick is the cause of all the marital disharmony, little Justin goes on a one-boy vendetta, physically assaulting every department-store and sidewalk Santa who crosses his path.
Very loosely based on the 1949 hit song of the same name, the made-for-TV
I Saw Mommy Kissing Santa Claus first aired December 9, 2001, on the PAX network. ~ Hal Erickson, All Movie Guide