I Am The Office Grandma - Apparently

I started thinking about it after a coworker called me "grandma" for the 90th time in the two years I have worked there and it got me thinking....why? Ok, ok - I do knit during lunch, and I do enjoy a good game of Scrabble if I can get anyone to play during our lunch our, I wear sweaters all the time and insist the office temperature is too cold, I wear a blanket over my lap if I get the chills and if it is really bad I switch on my office space heater. I drink hot tea, I always wear a heavy coat, scarf, hat AND gloves if it is even a smidgen cold outside. But come on! In truth I am literally the youngest in the office. And yet they call ME grandma. Sigh.