Oxford Comma Not Coma with Retro Ladies

"What's all this I've been hearing about the Oxford Coma?!" "That's the Oxford Comma, Kathleen. Comma. Use it!" Hey, it's an easy spelling mistake to make: One little "m"! Here are two retro, mid-century ladies talking to each other on the phone, getting this important punctuation matter straightened out (Kathleen is on the front of the mug, and her friend is on the back.) No matter which side you or a fellow word lover are on about the Oxford comma (also known as a serial comma), this design is a great gift idea for any funny grammar occasion. And Please Note: "Kathleen" can be customized to a name of your choice.