While filling in for Santa, Marcus decided that anyone who doesn't leave an offering of milk and cookies (or any other treat) is to be put on the naughty list and eaten instead. He didn't anticipate how many were naughty but that didn't stop him, even if he had to resort to stuffing them into his magic sack to consume later. But it didn't stop there, the more he ate, the greedier he got. Soon he was indiscriminately eating and capturing everyone and their offerings. As he grew fatter so did his appetite. He was eating cars like they were gumdrops, trees like they were candy canes, and even whole houses like they were made of gingerbread. By the time he returned to Santa's workshop he was unrecognizable, what was once a portly bull was now a literal mountain of fur and fat. There just remained one last home on his naughty list...

Done by the awesome  glammantis