You'll need something equally ironic to match your paper crown on Christmas Day. Step forward the Christmas jumper. Even Colin Firth couldn't pull this baby off and that's the whole point, you're showing your fun side. The Scandinavians do this sort of thing best so look for nordic motifs such as reindeers or fir trees. Boxing Day things go back to normal and style resumes.
GANT Rugger - Snowy Forest Jumper - £85