Also known as "basic white bitch" flavor, this is the favorite go to flavor for all things of basic white bitches. Usually released for limited time in the fall, especially at trendy coffee shops and restaurants.
I look at Chelsea, she is such a Basic white bitch, with her pumpkin spice latte and pumpkin spice bagels.
When you message someone after midnight and the vehicle you call a brain has turned into a pumpkin. You decide to spice it up, adding a little extra to be bold and funny but immediately regret it in the morning. That little extra is called Pumpkin Spice.