I figured it out after a while becuase I knew that our chimney had a small diameter, had a funnel on the top and the open window my parents left open for 'him' was just too small to fit some fat guy down.
Although I think my parents enjoyed the milk and biscuits and the carrots for the reindeer though.
Although I think my parents enjoyed the milk and biscuits and the carrots for the reindeer though.