Every Christmas season (in the United States at least), two notoriously bad seasonal films are aired “for the lulz”. They are “Santa Claus Conquers the Martians” (wiki, IA) (you can’t beat a title like that) and “Santa Claus” (wiki, IA) of K. Gordon Murray. Both of these are hilariously bad in ways their creators probably didn’t intend. However, they are feature films, which can make watching them hard.
For a shorter, lighter dose of Christmas nonsense, I present the little known, but just as bad, “A Visit to Santa” by Clem Williams. A short little flick (less than 15 minutes) containing Santa and some children wandering around a 1960s shopping mall in (according to reviewers) Pittsburgh, Pennsylvania. Pay particular attention to the Tom Swift-like obsession with transportation technology: Santa has a rocket (!) and magic helicopter (!!).
Even if you don’t, or can’t, watch the film itself, I highly recommend reading the reviews, which are a hoot.