This wins the best-ever-Christmas-decoration-on-a-vehicle prize of all time -- although it took me a few seconds to figure it out! The genius punster who created this is one of my husband's co-workers at their newspaper in northeast Mississippi.
Ho, Ho, Ho!
Coffee with Cathy 
Ha, ha, ha!
Can’t believe it took me so long to figure it out. For goodness sake, your title gave me the answer!
Had you not left the clue, I would have been cluless!
Okay all you spelling and grammar monitors, I meant CLUELESS!!!
Tip of the hat to Errol Castens, our Oxford bureau correspondent.
Glad you all are getting a smile out of this. I think it’s genius!