Cupcake Mystery

There is a white box inside the office fridge. Inside the box are chocolate cupcakes with white icing and rainbow sprinkles. On the top of the box are the words, "Cupcakes. Eat me." The words were written in thick black ink, presumably by a sharpie. There is no indication as to the origin of the cupcakes - no bakery name is stamped onto the bottom of the box and the generic block hand writing is indistinguishable.

I am intrigued. After lunch, I will eat a mystery cupcake.