What kind of cake?

We were talking about different types of pies that people like at my work and I said "My favorite is Blumpkin Pie". So a curious older lady sales woman at my work said "What is that?" so I said "Oh, it's Blueberry and Pumpkin." and she says That sounds delicious! I'll have to look up a recipe!". I had to break it to her that I was just messing around and to NOT look up the recipe. There was only one other person here (one of the only people in my age range) that got what it was.